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  • Mala

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    Malaria Rapid Diagnostic Test Performance

    Results of WHO product testing of malaria RDTs: Round 3 (2010-2011)

  • Malaria Rapid Diagnostic Test Performance

    Results of WHO product testing of malaria RDTs: Round 3 (2010-2011)

  • WHO Library Cataloguing-in-Publication Data :Malaria rapid diagnostic test performance results of WHO product testing of malaria RDTs: round 3 (2010-2011).1.Malaria - diagnosis. 2.Antimalarials - therapeutic use. 3.Malaria - drug therapy. 4.Diagnostic tests, Routine. 5.Reagent kits, Diagnostic - utilization.. 6.Sensitivity and specificity. I.UNICEF/UNDP/World Bank/WHO Special Programme for Research and Training in Tropical Diseases. II.Centers for Disease Control (U.S.). III.Foundation for Innovative New Diagnostics.

    ISBN 978 92 4 150256 6 (NLM classification: WC 750)

    Copyright World Health Organization on behalf of the Special Programme for Research and Training in Tropical Diseases 2011

    All rights reserved.The use of content from this health information product for all non-commercial education, training and information purposes is encouraged, including translation, quotation and reproduction, in any medium, but the content must not be changed and full acknowledgement of the source must be clearly stated. A copy of any resulting product with such content should be sent to TDR, World Health Organization, Avenue Appia, 1211 Geneva 27, Switzerland. TDR is a World Health Organization (WHO) executed UNICEF/UNDP/World Bank/World Health Organization Special Programme for Research and Training in Tropical Diseases.

    This information product is not for sale. The use of any information or content whatsoever from it for publicity or advertising, or for any commercial or income-generating purpose, is strictly prohibited. No elements of this information product, in part or in whole, may be used to promote any specific individual, entity or product, in any manner whatsoever.

    The designations employed and the presentation of material in this health information product, including maps and other illustrative materials, do not imply the expression of any opinion whatsoever on the part of WHO, including TDR, the authors or any parties cooperating in the production, concerning the legal status of any country, territory, city or area, or of its authorities, or concerning the delineation of frontiers and borders.Mention or depiction of any specific product or commercial enterprise does not imply endorsement or recommendation by WHO, including TDR, the authors or any parties cooperating in the production, in preference to others of a similar nature not mentioned or depicted.

    WHO, including TDR, and the authors of this health information product make no warranties or representations regarding the content, presentation, appearance, completeness or accuracy in any medium and shall not be held liable for any damages whatsoever as a result of its use or application. WHO, including TDR, reserves the right to make updates and changes without notice and accepts no liability for any errors or omissions in this regard. Any alteration to the original content brought about by display or access through different media is not the responsibility of WHO, including TDR, or the authors. WHO, including TDR, and the authors accept no responsibility whatsoever for any inaccurate advice or information that is provided by sources reached via linkages or references to this health information product.

    Layout: Bruno Duret

    Printed in Malta

  • Malaria rapid diagnostic test perforMance results of WHo product testing of malaria rdts: round 3 (2010-2011) I I I

    Contents acknoWledgeMents ViiiabbreViations X

    1. sUMMarY perforMance of Malaria rdts: WHo prodUct testing: roUnds 1-3 11.1. introduction 11.2. the WHo product testing programme 11.3. results of the evaluation 21.4. summary of outcomes 31.5. Use of these results 3

    2. WHo Malaria rdt prodUct testing: roUnd 3 eXecUtiVe sUMMarY 132.1. introduction 132.2. the WHo product testing programme 132.3. results of the evaluation 132.4. Use of these results 14

    3. backgroUnd 15

    4. objectiVe 16

    5. Materials and MetHods 175.1. test selection 175.2. outline of the product testing protocol 175.3. evaluation panels 195.4. rdt registration 205.5. specimen panel registration 205.6. test phases 205.7. performing rapid tests 205.8. interpretation of results 20

    6. data ManageMent 21

    7. QUalitY assUrance 22

    8. etHical considerations 22

    9. data analYsis 239.1. Measures of parasite detection: panel detection score

    and positivity rates 239.2. false-positive results 23

    9.2.1. incorrect species identification 239.2.2. false-positives from plasmodium-negative samples 23

    9.3. band intensity 239.4. lot agreement 239.5. invalid tests 239.6. Heat (thermal) stability 24

    10. laboratorY VersUs field-based Malaria rdt eValUations 24

  • Malaria rapid diagnostic test perforMance results of WHo product testing of malaria rdts: round 3 (2010-2011)IV

    11. resUlts 2511.1. summary 2511.2. phase 1 - p. falciparum culture panel 3011.3. phase 2 - Wild-type p. falciparum and p. vivax and

    plasmodium spp. negative samples 3111.3.1. p. falciparum detection 3111.3.2. p. vivax detection 3211.3.3. combined detection of p. falciparum and p. vivax 3311.3.4. p. falciparum and p. vivax positivity rate 3311.3.5. band intensity 3411.3.6. false-positive rates 35

    12. Heat stabilitY 3712.1. p. falciparum test lines 4012.2. pan-specific test lines 43

    13. ease of Use description 45

    14. discUssion of keY findings 4914.1. panel detection score (pds) and its relationship

    to sensitivity 4914.2. false-positive rate and specificity 5014.3. Heat (thermal) stability 5014.4. ease of use description 5114.5. inter-lot variability 5114.6. target antigens and species 52

    15. Using tHese resUlts to ensUre QUalitY of diagnosis in tHe field 5215.1. beyond procurement 5215.2. lot testing 53

    16. conclUsions 53

    17. references 54

    anneXes 55annex 1: characteristics of rapid malaria tests

    in round 3 56annex 2: Malaria rdt guide to results interpretation 58annex 3: phase 1 results 70annex 4: phase 2 results 74annex 5a: selection of an appropriate rdt 104annex 5b: rdt format review and ease

    of use assessment 105annex 6: introducing rdt-based malaria diagnosis

    into national programmes 106

    Reference to any company or product in this report, particularly in any of the figures or tables, does not in any way imply an endorsement, certification, warranty of fitness or recommendation by WHO of any company or product for any purpose, and does not imply preference over products of a similar nature that are not mentioned. WHO furthermore does not warrant that: (1) any list of companies or products is complete and/or error free; and/or that (2) any products listed are of acceptable quality, have obtained regulatory approval in any country, or that their use is otherwise in accordance with the national laws and regulations of any country, including but not limited to patent laws. Inclusion in this report does not furthermore imply any approval by WHO of the products in question (which is the sole prerogative of national authorities). Any lists of RDTs are not an exhaustive list of malaria RDTs. Such lists reflect those products which have been submitted for evaluation in Round 3 of the WHO Malaria RDT Product Testing Programme. The fact that certain products are not included in any list means that they have not or not yet been submitted for evaluation in the WHO Malaria RDT Product Testing Programme and does not indicate anything in respect of such products performance. WHO will not accept any liability or responsibility whatsoever for any injury, death, loss, damage, or other prejudice of any kind that may arise as a result of or in connection with the procurement, distribution and use of any product whatsoever included in this report. This report may not be used by manufacturers and suppliers for commercial or promotional purposes.

  • Malaria rapid diagnostic test perforMance results of WHo product testing of malaria rdts: round 3 (2010-2011) V

    figUres

    Figure S1: MalariaRDTperformanceinPhase2ofRounds1-3againstwild-type(clinical)samplescontainingP. falciparum atlow(200)andhigh(2000or5000)parasitedensities(parasites/l)andclean-negativesamples

    Figure S2: MalariaRDTperformanceinPhase2ofRounds1-3againstwild-type(clinical)samplescontainingP. vivax atlow(200)andhigh(2000or5000)parasitedensities(parasites/l)andclean-negativesamples

    Figure 1: Modeofactionofantigen-detectingmalariaRDTs

    Figure 2: Networkofspecimencollection,characterizationandtestingsites

    Figure 3: MalariaRDTProductTestingOverview

    Figure 4a: OriginofPhase2P. falciparumwild-type(clinical)samples

    Figure 4b: OriginofPhase2P. vivaxwild-type(clinical)samples

    Figure 5: TestingprocedureandcalculationofpaneldetectionscoreandbandintensityforProductAagainstasampledensityof200parasites/l

    Figure 6: TestingprocedureandcalculationofpaneldetectionscoreandbandintensityforProductAagainstasampledensityof2000parasites/l

    Figure 7: Phase1P. falciparumpaneldetectionscoreofmalariaRDTsatlow(200)andhigh(2000)parasitedensities(parasites/l)accordingtotargetantigentype(HRP2orpLDH)

    Figure 8: Phase2P. falciparumpaneldetectionscoreofmalariaRDTsatlow(200)andhigh(2000)parasitedensity(parasites/l)accordingtotargetantigentype(HRP2orpLDH)

    Figure 9: Phase2P. vivaxpaneldetectionscoreofmalariaRDTsatlow(200)andhigh(2000)parasitedensities(parasites/l)accordingtotargetantigentype(aldolase,pLDH)

    Figure 10: Phase2P. falciparumpaneldetectionscoreandpositivityrateat200parasites/l

    Figure 11: Phase2P. vivaxpaneldetectionscoreandpositivityrateat200parasites/l

    Figure 12: Phase2P. falciparum(P. falciparumtestline)false-positiverateagainstclean-negativesamples

    Figure 13: Phase2Plasmodiumspp.(panorP. vivax testline)false-positiverateagainstclean-negativesamples

    Figure 14: Phase2P. falciparumfalse-positiverateversusP. falciparumpaneldetectionscoreatlow(200)parasitedensity(parasites/l)

    Figure 15: Phase2P. vivaxfalse-positiverateversusP. vivaxpaneldetectionscoreatlow(200)parasitedensity(parasites/l)

    Figure 16: HeatstabilityofP. falciparum-specifictestlineofP. falciparum-onlytestsagainstalowdensityP. falciparumsample(200parasites/l).Positivityrateatbaseline,andafter60daysincubation

    Figure 17: HeatstabilityofP. falciparum-specifictestlineofP. falciparum-onlytestsagainstahighdensityP. falciparumsample(2000parasites/l).Positivityrateatbaseline,andafter60daysincubation

    Figure 18: HeatstabilityofP. falciparum-specifictestlineincombinationtestsagainstalowdensityP. falciparum sample(200parasites/l).Positivityrateatbaseline,andafter60daysincubation

    Figure 19: HeatstabilityofP. falciparumspecifictestlineincombinationtestsagainstahighdensityP. falciparum sample(2000parasites/l).Positivityrateatbaseline,andafter60daysincubation

    Figure 20: Heatstabilityofpan-lineofpan-specifictestsagainstalowdensityP. falciparumsample(200parasites/l).Positivityrateatbaseline,andafter60daysincubation

    Figure 21: Heatstabilityofpan-lineofpan-specifictestsagainstahighdensityP. falciparumsample(2000parasites/l).Positivityrateatbaseline,andafter60daysincubation

    Figure 22: Heatstabilityofpan-lineofcombinationtestsagainstalowdensityP. falciparumsample(200parasites/l).Positivityrateatbaseline,andafter60daysincubation

    Figure 23: Heatstabilityofpan-lineofcombinationtestsagainstahighdensityP. falciparumsample(2000parasites/l).Positivityrateatbaseline,andafter60daysincubation.

    Figure A6.1: ExamplemalariaRDTimplementationbudget

  • Malaria rapid diagnostic test perforMance results of WHo product testing of malaria rdts: round 3 (2010-2011)VI

    tables

    Table S1: MalariaRDTPhase2performanceinRounds1-3againstwild-type(clinical)samplescontainingP. falciparum and P. vivax atlow(200)andhigh(2000or5000)parasitedensities(parasites/l)andclean-negativesamples

    Table S2: MalariaRDTRounds1-3heatstabilityresultsonacultured P. falciparum sampleatlow(200)andhigh(2000)parasitedensity(parasites/l).Positivityrateatbaseline,andafter60daysincubationat35Cand45C

    Table S3: Productresubmissions:WHOMalariaRDTProductTesting(Rounds1-3)

    Table 1: ManufacturersandproductsacceptedintoRound3ofWHOMalariaRDTProductTestingProgramme

    Table 2: CharacteristicsofPlasmodiumspp.negativespecimens

    Table 3: SummaryPhase1performanceof50malariaRDTsagainst20culturedP. falciparumlinesatlow(200)andhigh(2000)parasitedensities(parasites/l)

    Table 4: SummaryPhase2performanceof50malariaRDTsagainstwild-type(clinical)P. falciparumandP. vivaxsamplesatlow(200)andhigh(2000)parasitedensities(parasites/l)andPlasmodiumspp.negativesamples

    Table 5: Heatstabilitytestingresultsfor50malariaRDTsonaculturedP. falciparumsampleatlow(200)andhigh(2000)parasitedensities(parasites/l).Positivityrateatbaseline,andafter60daysincubationat35Cand45C

    Table 6: Easeofusedescriptionof50malariaRDTs

    Table A3.1: LotvariabilityinpositiveresultsagainstP. falciparumculturesamplesatlow(200)andhigh(2000or5000)parasitedensities(parasites/l)

    Table A3.2: Distributionoftestbandintensityscores(0-4)againstPhase1P. falciparumculturedparasitesatlow(200)andhigh(2000)parasitedensities(parasites/l)

    Table A4.1: LotvariabilityinpositiveresultsagainstPhase2wild-typeP. falciparumandP. vivaxsamplesatlow(200)andhigh(2000)parasitedensities(parasites/l)

    Table A4.2: Distributionoftestbandintensity(0-4)scoresagainstPhase2wild-typeP. falciparumsamplesatlow(200)andhigh(2000)parasitedensities(parasites/l)

    Table A4.3: DistributionofPan/Pvtestbandintensity(0-4)scoresforPhase2wild-typeP. vivaxsamplesatlow(200)andhigh(2000)parasitedensities(parasites/l)

    Table A4.4: PaneldetectionscoreofPhase2wild-typeP. falciparuminlow(200)andhigh(2000)parasitedensities(parasites/l)bycontinent

    Table A4.5: Phase2P. falciparumtestlinefalse-positiveratesforwild-typeP. vivaxsamplesatlow(200)andhigh(2000)parasitedensities(parasites/l)

    Table A4.6: Phase2Pan(orP. vivax)testlinefalse-positiveratefornon-Pfinfectiononwild-typeP. falciparumsamplesatlow(200)andhigh(2000)parasitedensities(parasites/l)

    Table A4.7: Phase2false-positiverateforwild-typeP. falciparumtestlineresultsonallmalaria-negativesamples

    Table A4.8: Phase2false-positiverateforP. falciparuminsamplescontainingspecificnon-malarialinfectiouspathogens

    Table A4.9: Phase2false-positiverateofP. falciparuminsamplescontainingpotentiallycross-reactingbloodimmuno-logicalfactors

    Table A4.10: Phase2false-positiverateofpan/P. vivaxtestlineresultsonallmalaria-negativesamples

    Table A4.11: HeatstabilitytestingresultsforP. falciparum(orpan)testlineonaP. falciparumsampleatlowparasitedensity(200parasites/l).Positivityrateatbaseline,andafter60daysincubationat4C,35Cand45C

    Table A4.11a: HeatstabilitytestingresultsforpantestlineofcombinationRDTsonaP. falciparumsampleatlowparasitedensity(200parasites/l).Positivityrateatbaseline,andafter60daysincubationat4C,35Cand45C

    Table A4.12: HeatstabilitytestingresultsforP. falciparum(orpan)testlineonaP. falciparumsampleathighparasitedensity(2000parasites/l).Positivityrateatbaseline,andafter60daysincubationat4C,35Cand45C

  • Malaria rapid diagnostic test perforMance results of WHo product testing of malaria rdts: round 3 (2010-2011) VII

    Table A4.12a: HeatstabilitytestingresultsforpantestlineofcombinationRDTsonaP. falciparumsampleathighparasitedensity(2000parasites/l).Positivityrateatbaseline,andafter60daysincubationat4C,35Cand45C

    Table A4.13: HeatstabilitytestingresultsforP. falciparum(orpan)testlineonparasite-negativesamples.Positivityrateatbaseline,andafter60daysincubationat4C,35Cand45C

    Table A4.13a: HeatstabilitytestingresultsforpantestlineofcombinationRDTsonparasite-negativesamples.Positivityrateatbaseline,andafter60daysincubationat4C,35Cand45C

  • Malaria rapid diagnostic test perforMance results of WHo product testing of malaria rdts: round 3 (2010-2011)VIII

    acknoWledgeMents

    TheevaluationdescribedinthisreportwasajointprojectoftheGlobalMalariaProgramme(GMP),theFoundationforInnovativeNewDiagnostics(FIND),TDR,SpecialProgrammeforResearchandTraininginTropicalDiseasessponsoredbyUNICEF,UNDP,WorldBankandWHOandtheUSCentersforDiseaseControlandPrevention(CDC),undertheWHO-FINDMalariaRDTEvaluationProgramme.TheprojectwasfinancedbyFIND,theAustralianAgencyforInternationalDevelopment(AusAID),theUnitedStatesAgencyforInternationalDevelopment(USAID),theUKDepartmentforInternationalDevelopment(DFID)andTDR.Theprojectwouldnothavebeenpossiblewithoutthecooperationandsupportofthespecimencollectionsites,andthespecimencharacterizationlaboratoriesmentionedherein,andacknowledgesthetechnicaladvicefrommanymalariadiagnosticmanufacturersanddevelopersinthedevelopmentoftheprogramme.ThisreportonRound3ofWHOMalariaRDTProductTestingwascompiledbyJaneCunningham(SpecialProgrammeforResearchandTraininginTropicalDiseases(TDR),Switzerland)andDavidBell(FoundationforInnovativeNewDiagnostics(FIND),Switzerland)

    TheMalariaRDTEvaluationProgrammeofWHO,TDRandFINDisgratefultoallthosewhocontributedtotheconductoftheevaluationandpreparationofthisRound3report.

    Salim Abdullah IfakaraHealthResearchandDevelopmentCentre,UnitedRepublicofTanzania

    Audrey Albertini FoundationforInnovativeNewDiagnostics(FIND),Switzerland

    Frederic Ariey InstitutPasteur,Cambodia

    John Barnwell USCentersforDiseaseControlandPrevention/NationalCenterforGlobalHealth/DivisionofMalariaandParasiticDiseases,UnitedStatesofAmerica

    John Bligh HospitalforTropicalDiseases,UnitedKingdomofGreatBritainandNorthernIreland

    David Bell FoundationforInnovativeNewDiagnostics(FIND),Switzerland

    Andrea Bosman WorldHealthOrganization/GlobalMalariaProgramme,Geneva,Switzerland

    Sandra Buisson HospitalforTropicalDiseases,UnitedKingdomofGreatBritainandNorthernIreland

    Debora Casandra USCentersforDiseaseControlandPrevention/NationalCenterforGlobalHealth/DivisionofMalariaandParasiticDiseases,UnitedStatesofAmerica

    Qin Cheng ArmyMalariaInstitute,Australia

    Peter Chiodini HospitalforTropicalDiseases,UnitedKingdomofGreatBritainandNorthernIreland

    Jane Cunningham TDR,SpecialProgrammeforResearchandTraininginTropicalDiseases,Switzerland

    Linda Dantes WHORegionalOfficefortheWesternPacific,ThePhilippines

    Djibrine Djalle InstitutPasteurBangui,CentralAfricanRepublic

    Babacar Faye UniversitCheikhAntaDIOP,Senegal

    Nahla Gadalla HospitalforTropicalDiseases,UnitedKingdomofGreatBritainandNorthernIreland

    Dionicia Gamboa UniversidadPeruanaCayetanoHerediaInstitutodeMedicinaTropical,Peru

    Cyrus Garay ResearchInstituteofTropicalMedicine,ThePhilippines

    Michelle Gatton QueenslandInstituteofMedicalResearch,Australia

    Jeffrey Glenn USCentersforDiseaseControlandPrevention/NationalCenterforGlobalHealth/DivisionofMalariaandParasiticDiseases,UnitedStatesofAmerica

    Iveth Gonzalez FoundationforInnovativeNewDiagnostics(FIND),Switzerland

    Sandra Incardona FoundationforInnovativeNewDiagnostics(FIND),Switzerland

    Sophie Jones USCentersforDiseaseControlandPrevention/NationalCenterforGlobalHealth/DivisionofMalariaandParasiticDiseases,UnitedStatesofAmerica

    Cara Kosack MdecinsSansFrontires,TheNetherlands

    Myat Phone Kyaw DepartmentofMedicalResearch,Myanamar

    Jennifer Luchavez ResearchInstituteofTropicalMedicine,ThePhilippines

  • Malaria rapid diagnostic test perforMance results of WHo product testing of malaria rdts: round 3 (2010-2011) IX

    Lorraine Mationg ResearchInstituteofTropicalMedicine,ThePhilippines

    James McCarthy QueenslandInstituteofMedicalResearch,UniversityofQueensland,Australia

    Didier Menard InstitutPasteurdeMadagascar,Madagascar;InstitutPasteur,Cambodia

    Claribel Murillo CentroInternacionaldeEntrenamientoeInvestigacionesMdicas(CIDEIM),Colombia

    Sina Nhem InstitutPasteur/NationalMalariaCentre(CNM),Cambodia

    Bernhards Ogutu KenyaMedicalResearchInstitute(KEMRI),Kenya

    Pamela Onyor KenyaMedicalResearchInstitute(KEMRI),Kenya

    Daniel Orozco MdecinsSansFrontires,TheNetherlands

    Wellington Oyibo UniversityofLagos,Nigeria

    Anita Pelecanos QueenslandInstituteofMedicalResearch,Australia

    Mark Perkins FoundationforInnovativeNewDiagnostics(FIND),Switzerland

    Roxanne Rees-Channer Consultant(FIND),HospitalforTropicalDiseases,UnitedKingdomofGreatBritainandNorthernIreland

    Muth Sinuon NationalMalariaCentre(CNM),Cambodia

    Michael Valentine USCentersforDiseaseControlandPrevention/NationalCenterforGlobalHealth/DivisionofMalariaandParasiticDiseases,UnitedStatesofAmerica

    Melissa Vega TDR,SpecialProgrammeforResearchandTraininginTropicalDiseases,Switzerland

    Julie Vercruysse FoundationforInnovativeNewDiagnostics(FIND),Switzerland

    Kristin Wall USCentersforDiseaseControlandPrevention/NationalCenterforGlobalHealth/DivisionofMalariaandParasiticDiseases,UnitedStatesofAmerica

  • Malaria rapid diagnostic test perforMance results of WHo product testing of malaria rdts: round 3 (2010-2011)X

    abbreViations

    ACT Artemisinin-basedcombinationtherapy

    AMI ArmyMalariaInstitute

    AusAID AustralianAgencyforInternationalDevelopment

    CDC UnitedStatesCentersforDiseaseControlandPrevention

    CLIA ClinicalLaboratoryImprovementAmendments

    DFID UKDepartmentforOverseasDevelopment

    FIND FoundationforInnovativeNewDiagnostics

    HRP2 Histidine-richprotein2

    HTD HospitalforTropicalDiseases

    ISO InternationalOrganizationforStandardization

    PCR Polymerasechainreaction

    PDS Paneldetectionscore

    pLDH Plasmodiumlactatedehydrogenase

    Pf Plasmodium falciparum

    Pv Plasmodium vivax

    p/L Parasitespermicrolitre

    QA Qualityassurance

    QC Qualitycontrol

    QMS Qualitymanagementsystems

    RDT Rapiddiagnostictest(forthepurposesofthisreport,thisreferstoimmunochromatographiclateralflowdevicesforthedetectionofmalariaparasiteantigens)

    SOP StandardOperatingProcedure

    TDR SpecialProgrammeforResearchandTraininginTropicalDiseasessponsoredbyUNICEF,UNDP,WorldBankandWHO

    UN UnitedNations

    USA UnitedStatesofAmerica

    USAID UnitedStatesAgencyforInternationalDevelopment

    WPRO WesternPacificRegionalOffice

    WHO WorldHealthOrganization

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    Malaria rapid diagnostic test perforMance results of WHo product testing of malaria rdts: round 3 (2010-2011) 1

    1. sUMMarY perforMance of Malaria rdts: WHo prodUct testing: roUnds 1-3

    1.1. introductionTheWorldHealthOrganizationestimatesthathalftheworldspopulationareatriskofmalaria,with225millionpeopledevelopingclinicalmalariain2009(78%inAfrica),and781,000deaths(91%inAfrica,mostbeingchildren).Malariaremainsendemicin106countries,andwhileparasite-baseddiagnosisisincreasing,mostsuspectedcasesofmalariaarestillnotproperlyidentified,resultinginover-useofanti-malarialdrugsandpoordiseasemonitoring.1

    WHOrecommendsthatmalariacasemanagementbebasedonparasite-baseddiagnosisinallcases2.Theuseofantigen-detectingrapiddiagnostictests(RDTs)formsavitalpartofthisstrategy,formingthebackboneofexpansionofaccesstomalariadiagnosisastheyprovideparasite-baseddiagnosisinareaswheregoodqualitymicroscopycannotbemaintained.ThenumberofRDTsavailable,andthescaleoftheiruse,hasrapidlyincreasedoverthepastfewyears.However,limitationsofcomparativefieldtrialsandtheheterogeneousnatureofmalariatransmissionandepidemiologyhaslimitedtheavailabilityofgoodqualityperformancedatathatnationalmalariaprogrammesrequiretomakeinformeddecisionsonprocurementandimplementation,andlimitstheabilitytoextrapolateresultsoffieldtrialstodifferentpopulationsandtimeperiods.Tothisendin2006,theWorldHealthOrganization(WHO),SpecialProgrammeforResearchandTraininginTropicalDiseases(TDR)andtheFoundationforInnovativeNewDiagnostics(FIND)launchedanevalua-tionprogrammetoassessthecomparativeperformanceofcommerciallyavailablemalariaRDTs.Thisdataisguidingprocurementdecisionsandhelpingtodriveimprovementinthequalityofmanufacturing.TheresultsofthefirstandsecondroundsofProductTestingwerepublishedin2009and2010,andnowformthebasisofprocurementcriteriaofWHOandUNagenciesandnationalgovernments.

    ThisSummarypresentsanoverviewoftheresultsofthefirst,secondandthirdroundsofWHOProductTestingofmalariaantigen-detectingRDTscompletedin2008,2009and2011respectively,andispublishedinconjunctionwiththereleaseoftheresultsofRound3.Theresultsofthethreeroundsoftestingshouldbeconsideredasasingledataset.Concerningproductsre-submittedforevaluation,theresultsofearlierroundsarereplacedbysubsequentroundsandthereforeonlyonesetofresultsperproductfeaturein

    1 World Malaria Report 2010.Geneva,WorldHealthOrganization,2010.2 Guidelines for the Treatment of Malaria, Second Edition.Geneva,

    WorldHealthOrganization,2010.

    thissummary.Separatefullreportsofallroundsshouldbeconsultedforfurtherdetailonproductperformance,andontheinterpretationanduseoftheseresults.

    1.2. the WHo product testing programmeTheRDTevaluationssummarizedherewereperformedasacollaborationbetweenWHO,TDR,FIND,theUSCentersforDiseaseControlandPrevention(CDC)andotherpartners3.AllcompaniesmanufacturingunderISO13485:2003QualitySystemStandardwereinvitedtosubmitupto3testsforevaluationundertheprogramme.Inthefirstroundoftesting,41productsfrom21manufacturerswereevaluatedagainstpreparedbloodpanelsofculturedPlasmodium falciparumparasites,while29productsfrom13manufacturerswereevaluatedinRound2.InRound3,50productswereevaluatedfrom23manufacturers,including23productsre-submittedfromearlierrounds(TableS3).Ofthese120totalproducts,118progressedtotestingagainstpanelsofpatient-derivedP. falciparumandP. vivaxparasites,andaparasite-negativepanel.Thermalstabilitywasassessedaftertwomonthsofstorageatelevatedtemperatureandhumidity,andadescriptiveeaseofuseassessmentwasrecorded.Ofthe118fullyevaluatedproducts,25havebeenevaluatedinmorethanoneround.Ofthe95uniqueproductstestedbytheprogramme,29detectP. falciparumalone,57detectanddifferentiateP. falciparumfromnon-P. falciparummalaria(eitherpan-specificorspecies-specific),8detectP. falciparumandnon-P. falciparummalariawithoutdistinguishingbetweenthem,andoneproductwasdesignedtodetectP. vivaxonly.Manufacturerssubmittedtwolotsofeachproductforevaluation.Wherethesameproducts4havebeenre-submittedinsubsequentroundsoftesting,thelatterresultsreplaceresultspublishedfromtheearlierround.Thus,theperformanceofmanytestsintheresultsbelowdifferfromthosepublishedintheRound1andRound2reports.

    Theevaluationisdesignedtoprovidecomparativedataontheperformanceofthesubmittedproductionlotsofeachproduct.SuchdatawillbeusedtoguideprocurementdecisionsofWHOandotherUNagenciesandnationalgovernments.ProducttestingispartofacontinuingprogrammeofworktoimprovethequalityofRDTsthatareused,andtosupportbroadimple-mentationofreliablemalariadiagnosisinareaswheremalariaisprevalent.AfourthroundofproducttestingbeganinJune2011.

    3 SeefullreportsofRounds1,2and3forfulllistofcollaboratingpartners.4 Workingdefinitionofaproductcanbefoundhereonpage13:http://

    www.wpro.who.int/internet/resources.ashx/RDT/docs/pdf_version/web3_QARDTreport.pdf(accessed8September2011)

    http://www.wpro.who.int/internet/resources.ashx/RDT/docs/pdf_version/web3_QARDTreport.pdfhttp://www.wpro.who.int/internet/resources.ashx/RDT/docs/pdf_version/web3_QARDTreport.pdfhttp://www.wpro.who.int/internet/resources.ashx/RDT/docs/pdf_version/web3_QARDTreport.pdf
  • Malaria rapid diagnostic test perforMance results of WHo product testing of malaria rdts: round 3 (2010-2011)2

    1.3. results of the evaluationTheresults(summarizedinFiguresS1andS2andTablesS1andS2)providecomparativedataontwolotsofproductsagainstapanelofparasitesamplesdilutedtoalowparasitedensity(200parasites/l)andahigherparasitedensity(2000or5000parasites/l).Theformeriswellbelowthemeanparasitedensityfoundinmanypopulationswithendemicmalaria,andconsideredclosetothethresholdthattestsmustdetecttoreliablyidentifyclinicalmalariainmanysettings.5Forthepurposesofthisreport,themainmeasureofperform-anceisthepaneldetectionscore(PDS)6;thepercentageofmalariasamplesinthepanelgivingapositiveresultbytwoRDTsperlotatthelowerparasitedensity,andasingleRDTperlotatthehigherparasitedensity.Thus,itisnotameasureofRDTclinicalsensitivity,orpositivityrateagainstthepanelbutratheracombinedmeasureofpositivityrate,alongwithinter-testandinter-lotconsistency.Thefiguresalsoshowthefalse-positiveratesagainstbloodsamplescontainingnomalariaparasitesorknownmarkersofotherdiseases,andtherateatwhichinvalidresultsoccurred.

    TheclinicalsensitivityofanRDTtodetectmalariaishighlydependentonthelocalconditions,includingparasitedensityinthetargetpopulation.Sensitivityofatestwillthereforedifferbetweenpopulationswithdifferinglevelsoftransmission,astheirdifferentlevelofimmunitywillaffecttheparasitedensityatwhichtheyexhibitsymptomswarrantingadiagnostictest.Wheretransmissionratesarelow,parasitedensitiesinpeoplewithsymptomsofmalariaarelikelytobelower,resultingintestshavingalowersensitivity.Forthisreason,testperform-anceat200parasites/lisparticularlyimportant.TheresultsinthisreportshowcomparativeperformancebetweenRDTs,andgiveanindicationofwhichproductsarelikelytoprovidehighersensitivityinthefield,particularlyinpopulationswithlow-densityinfections.Ingeneral,ascountriesreducemalariaprevalenceandevenmovetowardsmalariaelimination,detectionoflowparasitedensitiesbecomesincreasinglyimportantincasemanagement.Asthedetectionrateat2000parasites/lindicates,thesensitivityofmanyoftheseproductswillbesimilarinpopulationswithhigherparasitedensities,althoughasubsetofanypopulationwillincludevulnerableindividualswhomaydevelopillnessatlowparasitedensities(e.g.youngchildren,pregnantwomen,thosewellprotectedbybednets)andmustalwaysbetakenintoaccountwheninterpretingRDTresults.AnimportantcaveatwhenpredictingfieldsensitivityfromthePDSprovidedinthisreportisthatthepanelsusedinthisevaluationonlyincludeparasitesknowntoexpressthetargetantigens.Whilenon-expressionofthetargetantigenshasnotbeenrecordedforaldolaseorpLDH,itisknownthatparasitesinfectingpeopleinsomeareasofSouthAmericadonotexpressHRP27.InareaswhereHRP2-deletedparasitesexist,HRP2-detecting

    5 Parasitological Confirmation of Malaria Diagnosis. ReportofaWHOtechnicalconsultationGeneva,68October2009. Geneva,WorldHealthOrganization,2010.ISBN9789241599412

    6 TermedDetectionRateinthefullreportofRound1,publishedin2009.SeetheRound3reportforafullexplanationofthepaneldetectionscore(PDS).

    7 GamboaDetal.PLoS One,2010:5(1):e8091

    testswillhavegreatlyreducedsensitivityorbeincapableofdetectingP. falciparum.Insuchpopulations,onlytestsdetectingpLDHinP. falciparumparasiteswillbeeffectiveindiagnosingfalciparummalaria.

    Heatstability(summarizedinTableS2)isvitaltomaintainingsensitivityofthetestinthefield.Asaresult,forprocurement,itisessentialthatcarefulconsiderationbegiventostabilityresultstoensurethatproductstobeusedinareaswithhightemperaturesoftransportandstoragehavedemonstratedstabilityintheproducttestingprogramme.Requirementswillvarybetweencountries:forexample,iftestsaretobedeployedinareaswheretemperaturesrarelyriseabove30C,lessemphasismaybeplacedonstabilityathightemperaturescomparedtootheraspectsoftestquality.

    Easeofuserequirementswillalsovary,dependingontheextentoftrainingandtheworkenvironmentoftheend-users.Particularlyinprimaryhealthcaresettings,thesimplerthetests,theeasieritwillbetoavoiderrorsinpreparationandinterpretation.

    Detailedresultsoftheevaluationscanbefoundinthereportsofeachevaluation,8andatwww.wpro.who.int/sites/rdt.AninteractiveguidetoassistinselectingproductswithperformancecharacteristicsmostsuitableforaparticularcountryhealthprogrammeisfoundontheFINDwebsite.9

    8 Malaria Rapid Diagnostic Test Performance : Results of WHO product testing of malaria RDTs: Round 1 (2008).Geneva,WorldHealthOrganization,2009.ISBN9789241598071;Malaria Rapid Diagnostic Test Performance : Results of WHO product testing of malaria RDTs: Round 2 (2009). Geneva,WorldHealthOrganization,2010.ISBN9789241599467

    9 MalariaRDTInteractiveGuide:http://www.finddiagnostics.org/programs/malaria/find_activities/product_testing/malaria-rdt-product-testing/index.jsp(accessed8Sept.2011)

    http://www.wpro.who.int/sites/rdthttp://www.finddiagnostics.org/programs/malaria/find_activities/product_testing/malaria-rdt-product-testing/index.jsphttp://www.finddiagnostics.org/programs/malaria/find_activities/product_testing/malaria-rdt-product-testing/index.jsphttp://www.finddiagnostics.org/programs/malaria/find_activities/product_testing/malaria-rdt-product-testing/index.jsp
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    Malaria rapid diagnostic test perforMance results of WHo product testing of malaria rdts: round 3 (2010-2011) 3

    1.4. summary of outcomesThislaboratory-basedevaluationprovidesacomparativemeasureofRDTperformanceinastandardizedwaytodistinguishbetweenwellandpoorlyperformingteststoinformprocurementdecisionsofmalariacontrolprogrammesandguideUNprocurementpolicy.

    Overall,animprovementwasnotedintheperformanceofproductsre-submittedtoRound3(TableS3),indicatingproductimprovementbythemanufacturers.Furthermore,theproportionoftestsachievingaPDS(>75%)at200parasites/lishigherthanthatseeninpreviousreports.

    SeveralRDTsfromthethreeroundsoftestingdemonstratedconsistentdetectionofmalariaatlowparasitedensities(200parasites/l),havelowfalsepositiverates,arestableattropicaltemperatures,arerelativelyeasytouse,andcandetectP. falciparum,P. vivaxinfections,orboth.

    Performancebetweenproductsvariedwidelyatlowparasitedensity(200parasites/l);however,themajorityofproductsshowedahighlevelofdetectionat2000or5000parasites/l.

    P. falciparumteststargetingHRP2antigendemonstratedthehighestdetectionrates,butsometeststargetingpLDHalsoexhibitedhighdetectionrates.

    Testperformancevariedbetweenlots,andwidelybetweensimilarproducts,confirmingtheadvisabilityoflot-testingpost-purchaseandpriortouseinthefield.

    Theresultsunderscoretheneedformanufacturerstohaveadequatereferencematerialsforproductdevelopmentandlot-release.TheWHO-FINDMalariaRDTEvaluationProgramme,incollaborationwiththeCDC,offersqualitystandardpanelstomanufacturerstoassistinthisprocess.

    1.5. Use of these resultsAccuratediagnosisisvitaltogoodmalariacasemanagement,whetherbasedonmicroscopyorRDTs.Theresultsofthisreportshouldbeusedtoshort-listRDTsforprocurementforuseincaseswheregoodmicroscopyisnotavailableorappropriate.Additionally,itisimperativethatprocurementdecisionsbasedontheseresultstakeintoconsiderationlocalconditionsofmalariatransmissionandillnesswherethetestswillbeused(e.g.Plasmodiumspecies,targetantigenvariation,parasitedensities,climate),aswellasotherimportantconsiderations,includingfield-basedeaseofuseassessments,andtraining/retrainingrequirements.Furthermore,inordertoensurethatthehighperformancedemonstratedbythelotsevaluatedintheproducttestingprogrammeismaintained,itisrecommendedthateachlotofRDTsisalsotestedinastandardizedwaypriortodispersaltothefield.10ProcurementofRDTsmustnotoccurwithoutprogrammaticandinfrastructurepreparationforproperuse,includingsupplychainmanagement,trainingontestusageanddisposal,andtrainingonpatientmanagementinresponsetoresults.Themainreportprovidesanalgorithm(Annex5a)toassistinthisdecision-makingprocessandcomprehensiveguidanceonseveralaspectsofprocurementcanbefoundinGoodPracticesforselectingandprocuringrapiddiagnostictestsformalaria.11

    10 TheWHO-FINDMalariaRDTEvaluationProgrammeprovideslot-testingcapacityinanumberofregionallaboratoriesfreeofcharge,[email protected]@finddiagnostics.org.

    11 GoodPracticesforselectingandprocuringrapiddiagnostictestsformalaria,Geneva,WorldHealthOrganization,2011ISBN9789241501125

    mailto:Malaria_rdt%40who.int?subject=mailto:info%40finddiagnostics.org?subject=
  • Malaria rapid diagnostic test perforMance results of WHo product testing of malaria rdts: round 3 (2010-2011)4

    Figure S1: Malaria RDT performance in Phase 2 of Rounds 1-3 against wild-type (clinical) samples containing P. falciparum at low (200) and high (2000 or 5000) parasite densities (parasites/l) and clean-negative samples

    a panel detection score - A sample is considered detected only if all RDTs from both lots read by the first technician, at minimum specified reading time, are positive.b clean-negative - blood samples from healthy volunteers with no known current illness or blood abnormality.* indicates tests that also detect other non-P. falciparum parasites. (see Figure S2)

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    Malaria rapid diagnostic test perforMance results of WHo product testing of malaria rdts: round 3 (2010-2011) 5

    Figure S2: Malaria RDT performance in Phase 2 of Rounds 1-3 against wild-type (clinical) samples containing P. vivax at low (200) and high (2000 or 5000) parasite densities (parasites/l) and clean-negative samples

    a panel detection score - A sample is considered detected only if all RDTs from both lots read by the first technician, at minimum specified reading time, are positive.

    b clean-negative - blood samples from healthy volunteers with no known current illness or blood abnormality.

  • Malaria rapid diagnostic test perforMance results of WHo product testing of malaria rdts: round 3 (2010-2011)6

    Tabl

    e S1

    : Mal

    aria

    RDT

    Pha

    se 2

    per

    form

    ance

    in R

    ound

    s 1-

    3 ag

    ains

    t w

    ild t

    ype

    (clin

    ical

    ) sa

    mpl

    es c

    onta

    inin

    g P.

    fal

    cipa

    rum

    and

    P. v

    ivax

    at

    low

    (20

    0) a

    nd

    high

    (20

    00 o

    r 50

    00)

    para

    site

    den

    sitie

    s (p

    aras

    ites

    /l)

    and

    clea

    n ne

    gati

    ve s

    ampl

    es

    Prod

    uct

    Cata

    logu

    e nu

    mbe

    r M

    anuf

    actu

    rer

    Pane

    l Det

    ectio

    n Sc

    orea

    False

    pos

    itive

    rat

    es (%

    )To

    tal f

    alse

    pos

    itive

    ra

    tesb

    (%)

    Inva

    lid

    rate

    (%)

    (n=1

    204)

    Roun

    d

    200

    pa

    rasit

    es/

    l20

    00 o

    r 50

    00

    para

    sites

    /l

    200

    pa

    rasit

    es/

    l20

    00 o

    r 50

    00

    para

    sites

    /l

    Clea

    n-ne

    gativ

    e sa

    mpl

    es

    Pf samplesc

    Pv samplesd

    Pf samplesc

    Pv samplesd

    Pf s

    ampl

    esPv

    sam

    ples

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    ampl

    esPv

    sam

    ples

    Fals

    e po

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    e

    non-

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    e po

    sitiv

    e

    Pf

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    ctio

    nf

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    e po

    sitiv

    e

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    infe

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    e po

    sitiv

    e

    Pf

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    ctio

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    False

    pos

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    Pl

    asm

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    13

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    .57

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    1BI

    ONOT

    E M

    ALAR

    IA P

    .f. A

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    pid

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    85.9

    N/A

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    1.4

    2.0

    0.1

    3Ca

    reSt

    art

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    aria

    HRP

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    ss B

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    nc.

    98.7

    N/A

    98.7

    N/A

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    5.0

    N/A

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    2.4

    0.0

    1Ca

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    aria

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    33.

    00.

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    alar

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    33

    diag

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    99.0

    N/A

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    (77)

    7.0

    0.9

    2di

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    0.0

    1.4

    0.0

    0.0

    0.0

    (199

    )0.

    13

    Mal

    eris

    can

    Mal

    aria

    Pf/

    Pv

    MAT

    -50

    Bhat

    Bio

    -Tec

    h In

    dia

    (P) L

    td52

    .00.

    097

    .060

    .01.

    8 (3

    99)

    2.5

    32.5

    2.5

    (79)

    1.5

    (199

    )0.

    42

    OnSi

    ght

    - P

    araQ

    uick

    -2 (P

    v,Pf)

    Mal

    aria

    Tes

    t53

    7-25

    -DB

    Amge

    nix

    Inte

    rnat

    iona

    l, In

    c.92

    .037

    .510

    0.0

    100.

    00.

    51.

    90.

    00.

    03.

    50.

    12

    OnSi

    te M

    alar

    ia P

    f/Pv

    Ag

    Rapi

    d Te

    stj

    R011

    2CCT

    K Bi

    otec

    h, In

    c.84

    .997

    .110

    0.0

    100.

    05.

    30.

    06.

    10.

    028

    .00.

    03

    SD B

    IOLI

    NE

    Mal

    aria

    Ag

    Pf/P

    v05

    FK80

    Stan

    dard

    Dia

    gnos

    tics,

    Inc.

    96.0

    95.0

    100.

    010

    0.0

    0.0

    0.0

    (159

    )0.

    0 (1

    99)

    0.0

    3.5

    0.2

    2Pf

    , Pv

    and

    Pan

    Core

    M

    alar

    ia P

    an/P

    v/Pf

    M

    AL-1

    9002

    6Co

    re D

    iagn

    ostic

    s92

    .911

    .499

    .094

    .30.

    3 (3

    91)

    0.0

    (137

    )0.

    0 (1

    97)

    1.4

    3.5

    (198

    )1.

    03

    diag

    nost

    icks

    MAL

    ARIA

    (Pan

    /Pv/

    Pf) C

    asse

    tte

    MPN

    VFC1

    007.5

    SSA

    Diag

    nost

    ics

    & B

    iote

    ch S

    yste

    ms

    93.9

    11.4

    99.0

    94.3

    0.0

    (389

    )0.

    0 (1

    39)

    0.0

    (196

    )2.

    9 (6

    9)4.

    0 (1

    99)

    1.1

    3Fi

    rstS

    ign

    - P

    araV

    iew

    -3 (P

    an+P

    v+Pf

    ) Mal

    aria

    Tes

    t21

    03 C

    B-25

    Uni

    med

    Inte

    rnat

    iona

    l Inc

    .89

    .045

    .010

    0.0

    100.

    00.

    0 (3

    99)

    2.5

    0.0

    0.0

    24.5

    0.1

    2Pa

    ram

    ax-3

    Rap

    id T

    est f

    or M

    alar

    ia P

    an/P

    v/Pf

    (dev

    ice)

    5032

    0025

    Zeph

    yr B

    iom

    edic

    als

    93.0

    45.0

    100.

    010

    0.0

    0.0

    (396

    )0.

    0 (1

    59)

    0.0

    (199

    )0.

    037

    .0 (1

    98)

    0.7

    2Pa

    n on

    lyAd

    vant

    age

    Pan

    Mal

    aria

    Car

    dIR

    0130

    25J.

    Mitr

    a &

    Co.

    Pvt

    . Ltd

    .72

    .210

    0.0

    100.

    010

    0.0

    N/A

    N/A

    N/A

    N/A

    1.8

    0.0

    1Ca

    reSt

    art

    Mal

    aria

    pLD

    H (P

    AN)

    G01

    11Ac

    cess

    Bio

    , Inc

    .92

    .410

    0.0

    100.

    010

    0.0

    N/A

    N/A

    N/A

    N/A

    6.6

    0.0

    1Cl

    earv

    iew

    M

    alar

    ia p

    LDH

    j 70

    8840

    25Or

    geni

    cs L

    td.

    81.8

    85.7

    99.0

    100.

    0N

    /AN

    /AN

    /AN

    /A13

    .50.

    53

    diag

    nost

    icks

    MAL

    ARIA

    (Pan

    ) Cas

    sett

    e M

    PNW

    BC10

    07.3

    SSA

    Diag

    nost

    ics

    & B

    iote

    ch S

    yste

    ms

    16.2

    54.3

    92.9

    100.

    0N

    /AN

    /AN

    /AN

    /A0.

    00.

    33

    Firs

    t Res

    pons

    e M

    alar

    ia A

    g pL

    DHI1

    2FRC

    30Pr

    emie

    r Med

    ical

    Cor

    pora

    tion

    Ltd.

    31.0

    92.5

    98.0

    100.

    0N

    /AN

    /AN

    /AN

    /A0.

    00.

    02

    Firs

    tSig

    n -

    Pan

    Chec

    k (P

    an) M

    alar

    ia T

    est

    2104

    CB-

    25U

    nim

    ed In

    tern

    atio

    nal I

    nc.

    25.0

    82.5

    87.0

    100.

    0N

    /AN

    /AN

    /AN

    /A2.

    50.

    22

    OnSi

    ght

    - P

    anSc

    reen

    (Pan

    ) Mal

    aria

    Tes

    t53

    9-25

    -DB

    Amge

    nix

    Inte

    rnat

    iona

    l, In

    c.22

    .077

    .596

    .010

    0.0

    N/A

    N/A

    N/A

    N/A

    2.5

    0.2

    2Pa

    raba

    nk

    Dev

    ice

    - Ra

    pid

    test

    for M

    alar

    ia P

    anj

    5030

    1025

    Zeph

    yr B

    iom

    edic

    al S

    yste

    ms

    17.2

    62.9

    90.9

    100.

    0N

    /AN

    /AN

    /AN

    /A0.

    50.

    23

    Pv o

    nly

    SD B

    IOLI

    NE

    Mal

    aria

    Ag

    Pv05

    FK70

    Stan

    dard

    Dia

    gnos

    tics,

    Inc.

    N/A

    92.5

    N/A

    100.

    00.

    3N

    /A1.

    0N

    /A1.

    00.

    02

    Pf: P

    lasm

    odiu

    m fa

    lcip

    arum

    Pv

    : Pla

    smod

    ium

    viv

    ax

    pan:

    Pla

    smod

    ium

    spec

    ies

    a A

    sam

    ple

    is c

    onsi

    dere

    d de

    tect

    ed o

    nly

    if al

    l RDT

    s fr

    om b

    oth

    lots

    read

    by

    the

    first

    te

    chni

    cian

    , at m

    inim

    um s

    peci

    fied

    read

    ing

    time,

    are

    pos

    itive

    b Th

    e to

    tal n

    umbe

    r of t

    imes

    a p

    ositi

    ve re

    sult

    for m

    alar

    ia w

    as g

    ener

    ated

    whe

    n it

    shou

    ld n

    ot h

    ave

    been

    c

    Roun

    d 1,

    n=7

    9; R

    ound

    2, n

    =100

    ; Rou

    nd 3

    , n=9

    9d

    Roun

    d 1,

    n=2

    0; R

    ound

    2, n

    =40;

    Rou

    nd 3

    , n=3

    5e

    For c

    ombi

    natio

    n te

    sts,

    Pan

    or P

    v lin

    e, o

    nly,

    posi

    tive

    indi

    cate

    s a

    fals

    e po

    sitiv

    e P.

    falc

    ipar

    um in

    fect

    ion

    (Rou

    nd 1

    n=3

    16; R

    ound

    2, n

    =400

    ; Rou

    nd 3

    , n=3

    96)

    f Pf

    line

    pos

    itive

    indi

    cate

    s a

    fals

    e po

    sitiv

    e P.

    falc

    ipar

    um in

    fect

    ion

    (Rou

    nd 1

    , n=8

    0;

    Roun

    d 2,

    n=1

    60; R

    ound

    3, n

    =140

    )g

    For c

    ombi

    natio

    n te

    sts,

    Pan

    or P

    v lin

    e, o

    nly,

    posi

    tive

    indi

    cate

    s a

    fals

    e po

    sitiv

    e P.

    falc

    ipar

    um in

    fect

    ion

    (Rou

    nd 1

    , n=1

    58, R

    ound

    2, n

    =200

    ; Rou

    nd 3

    , n=1

    98)

    h Pf

    line

    pos

    itive

    indi

    cate

    s a

    fals

    e po

    sitiv

    e P.

    falc

    ipar

    um in

    fect

    ion

    (Rou

    nd 1

    , n=4

    0;

    Roun

    d 2,

    n=8

    0, R

    ound

    3, n

    =70)

    i Ro

    und

    1, n

    =168

    ; Rou

    nd 2

    , n=2

    00; R

    ound

    3, n

    =200

    j Pr

    oduc

    t res

    ubm

    issi

    on, r

    esul

    ts fr

    om m

    ost r

    ecen

    t rou

    nd o

    f tes

    ting

    repl

    ace

    prev

    ious

    re

    sults

    . Ref

    er to

    Tab

    le S

    3.

    k PD

    S pr

    esen

    ted

    in th

    e ta

    ble

    is b

    ased

    on

    a po

    sitiv

    e pf

    test

    line

    (eith

    er p

    f-H

    RP2

    or

    pf-p

    LDH

    ). P.

    falc

    ipar

    um P

    DS b

    ased

    on

    indi

    vidu

    al te

    st li

    nes

    was

    : pf

    -pLD

    H (1

    7.2%

    at

    200p

    /l;

    97%

    at 2

    000p

    /l)

    and

    pf-H

    RP2

    (87.

    9% a

    t 200

    p/l

    ; 100

    % a

    t 200

    0p/

    l)

    Dete

    ctio

    n ra

    te (%

    )9

    585

    -94

    50-8

    4<

    50

    Fals

    e po

    sitiv

    e ra

    te (%

    )1

    0

    Inva

    lid ra

    te (%

    )5

    % o

    f tes

    ts

    cond

    ucte

    d

    Tabl

    e S1

    (co

    ntin

    ued)

  • sUM

    Mar

    Y r

    oU

    nd

    s 1-

    3

    Malaria rapid diagnostic test perforMance results of WHo product testing of malaria rdts: round 3 (2010-2011) 9

    Tabl

    e S2

    : Mal

    aria

    RDT

    Rou

    nds

    1-3

    heat

    sta

    bilit

    y re

    sult

    s on

    a c

    ultu

    red

    P. f

    alci

    paru

    m s

    ampl

    e at

    low

    (20

    0) a

    nd h

    igh

    (200

    0) p

    aras

    ite

    dens

    ity

    (par

    asit

    es/

    l).

    Posi

    tivi

    ty r

    ate

    at b

    asel

    ine,

    and

    aft

    er 6

    0 da

    ys in

    cuba

    tion

    at 3

    5C

    and

    45C

    Prod

    uct

    Cata

    logu

    e nu

    mbe

    r M

    anuf

    actu

    rer

    Perc

    ent

    posit

    ive

    test

    res

    ults

    fo

    r P.

    fal

    cipa

    rum

    (Pf

    line)

    Perc

    ent

    posit

    ive

    test

    res

    ults

    fo

    r P.

    fal

    cipa

    rum

    (Pf

    line)

    Perc

    ent

    posit

    ive

    test

    res

    ults

    fo

    r P.

    fal

    cipa

    rum

    (Pan

    line

    )Pe

    rcen

    t po

    sitiv

    e te

    st r

    esul

    ts

    for

    P. f

    alci

    paru

    m (P

    an li

    ne)

    Roun

    d20

    0 pa

    rasit

    es/

    l20

    00 p

    aras

    ites/

    l20

    0 pa

    rasit

    es/

    l20

    00 p

    aras

    ites/

    l

    Base

    line

    35C

    45C

    Base

    line

    35C

    45C

    Base

    line

    35C

    45C

    Base

    line

    35C

    45C

    Num

    ber

    of t

    ests

    pos

    itive

    Num

    ber

    of t

    ests

    pos

    itive

    Num

    ber

    of t

    ests

    pos

    itive

    Num

    ber

    of t

    ests

    pos

    itive

    Lots

    1 a

    nd 2

    com

    bine

    dLo

    ts 1

    and

    2 c

    ombi

    ned

    Lots

    1 a

    nd 2

    com

    bine

    dLo

    ts 1

    and

    2 c

    ombi

    ned

    Pf o

    nly

    Adva

    nced

    Qua

    lity

    One

    Ste

    p M

    alar

    ia P

    .f Te

    sta

    ITP1

    1002

    TC40

    InTe

    c Pr

    oduc

    ts, I

    nc.

    100.

    010

    0.0

    100.

    010

    0.0

    100.

    010

    0.0

    N/A

    N/A

    N/A

    N/A

    N/A

    N/A

    3Ad

    vanc

    ed Q

    ualit

    yM

    alar

    ia (p

    .f) P

    OCT

    ITP1

    1002

    TC1

    InTe

    c Pr

    oduc

    ts, I

    nc.

    80.0

    95.0

    90.0

    100.

    010

    0.0

    100.

    0N

    /AN

    /AN

    /AN

    /AN

    /AN

    /A1

    Adva

    ntag

    e P.

    f. M

    alar

    ia C

    ard

    IR01

    6025

    J. M

    itra

    & C

    o. P

    vt. L

    td.

    95.0

    100.

    010

    0.0

    100.

    010

    0.0

    100.

    0N

    /AN

    /AN

    /AN

    /AN

    /AN

    /A1

    BION

    OTE

    MAL

    ARIA

    P.f.

    Ag

    Rapi

    d Te

    st K

    it RG

    19-1

    1Bi

    onot

    e,In

    c.10

    0.0

    100.

    086

    .710

    0.0

    90.0

    80.0

    N/A

    N/A

    N/A

    N/A

    N/A

    N/A

    3Ca

    reSt

    art

    Mal

    aria

    HRP

    2 (P

    f)G

    0141

    Acce

    ss B

    io, I

    nc.

    100.

    010

    0.0

    100.

    010

    0.0

    100.

    010

    0.0

    N/A

    N/A

    N/A

    N/A

    N/A

    N/A

    1Ca

    reSt

    art

    Mal

    aria

    HRP

    2/pL

    DH P

    f tes

    tG

    0181

    Acce

    ss B

    io, I

    nc.

    100.

    010

    0.0

    100.

    010

    0.0

    100.

    010

    0.0

    N/A

    N/A

    N/A

    N/A

    N/A

    N/A

    2Cl

    earv

    iew

    M

    alar

    ia P

    .f.a

    VB01

    Visi

    on B

    iote

    ch (P

    ty) L

    td10

    0.0

    100.

    010

    0.0

    100.

    010

    0.0

    100.

    0N

    /AN

    /AN

    /AN

    /AN

    /AN

    /A3

    Core

    M

    alar

    ia P

    f M

    AL-1

    9002

    0Co

    re D

    iagn

    ostic

    s10

    0.0

    100.

    096

    .710

    0.0

    100.

    010

    0.0

    N/A

    N/A

    N/A

    N/A

    N/A

    N/A

    3di

    agno

    stic

    ks-

    Mal

    aria

    (Pf)

    Cass

    ette

    KM

    FC60

    01SS

    A Di

    agno

    stic

    s &

    Bio

    tech

    Sys

    tem

    s95

    .070

    .055

    .095

    .095

    .095

    .0N

    /AN

    /AN

    /AN

    /AN

    /AN

    /A2

    diag

    nost

    icks

    - M

    alar

    ia (P

    f) Di

    pstic

    k K

    MFD

    6007

    SSA

    Diag

    nost

    ics

    & B

    iote

    ch S

    yste

    ms

    100.

    010

    0.0

    100.

    010

    0.0

    100.

    010

    0.0

    N/A

    N/A

    N/A

    N/A

    N/A

    N/A

    2Fi

    rst R

    espo

    nse

    Mal

    aria

    Ag

    HRP

    2I1

    3FRC

    30Pr

    emie

    r Med

    ical

    Cor

    pora

    tion

    Ltd.

    100.

    010

    0.0

    100.

    010

    0.0

    100.

    010

    0.0

    N/A

    N/A

    N/A

    N/A

    N/A

    N/A

    1Fi

    rstS

    ign

    M

    alar

    ia P

    f Car

    d Te

    st--

    Uni

    med

    Inte

    rnat

    iona

    l, In

    c.20

    .015

    .00.

    010

    0.0

    90.0

    95.0

    N/A

    N/A

    N/A

    N/A

    N/A

    N/A

    1H

    exag

    on M

    alar

    ia58

    051

    Hum

    an G

    mbH

    50.0

    35.0

    60.0

    95.0

    100.

    010

    0.0

    N/A

    N/A

    N/A

    N/A

    N/A

    N/A

    1H

    iSen

    s M

    alar

    ia A

    g Pf

    HRP

    2 Ca

    rd

    HR3

    023

    HBI

    Co.

    , Ltd

    .10

    0.0

    100.

    010

    0.0

    100.

    010

    0.0

    100.

    0N

    /AN

    /AN

    /AN

    /AN

    /AN

    /A2

    ICT

    Diag

    nost

    ics

    Mal

    aria

    P.f.

    aM

    L01

    ICT

    Diag

    nost

    ics

    100.

    010

    0.0

    100.

    010

    0.0

    100.

    010

    0.0

    N/A

    N/A

    N/A

    N/A

    N/A

    N/A

    3IM

    MU

    NOQ

    UIC

    K CO

    NTA

    CT fa

    lcip

    arum

    05

    19K2

    5Bi

    osyn

    ex10

    0.0

    100.

    010

    0.0

    100.

    010

    0.0

    100.

    0N

    /AN

    /AN

    /AN

    /AN

    /AN

    /A3

    Imm

    unoq

    uick

    Mal

    aria

    Fal

    cipa

    rum

    0502

    _K25

    Bios

    ynex

    100.

    010

    0.0

    100.

    010

    0.0

    100.

    010

    0.0

    N/A

    N/A

    N/A

    N/A

    N/A

    N/A

    1M

    alar

    ia P

    lasm

    odiu

    m fa

    lcip

    arum

    Rap

    id te

    st D

    evic

    e (W

    hole

    blo

    od)

    IMA-

    402

    ACON

    Lab

    orat

    orie

    s, In

    c.10

    0.0

    100.

    010

    0.0

    100.

    010

    0.0

    100.

    0N

    /AN

    /AN

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