types of drug tests 1.urine drug screen. types of drug tests 2.hair drug screen
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Types of Drug Tests
1. Urine drug screen
Types of Drug Tests
2. Hair drug screen
Types of Drug Tests
3. Blood drug screen
Types of Drug Tests
4. Saliva drug screen
Types of Drug Tests
5. Sweat drug screen
Detection Periods Summary
SUBSTANCE URINE HAIR BLOOD SALIVA
Alcohol 12-24 hrs n/a 12 hours 6-12 hours
Amphetamine (except meth) 2-3 days 90 days 12 hours 3 days
Barbiturates 2-14 days 90 days 1-7 days unknown
Benzodiazepines 1-5 days 90 days 6-48 hours 2-3 days
Cannabis (single use) 2-3 days 90 days 2-3 days 12-24 hrs
Cannabis (habitual use) 2-3 weeks 90 days 2 weeks 12-24 hrs
Cocaine 4-5 days 90 days 1 day 1 day
Codeine/Morphine 2-4 days 90 days 6-12 hours 12-36 hrs
Heroin 2-4 days 90 days 6 hours unknown
LSD 2-24 hours unknown 0-3 hours unknown
Methamphetamine 3-5 days 90 days 24 hours 3 days
PCP 3-7 days 90 days 1-3 days 3 days
Drug Testing Methodologies
• Tamper-evident seal
• Make the sample testable
• Screening test
• Confirmation test
• Test sensitivitySUBSTANCE SCREENING TEST GC / MS
Cannabis 50 ng/mL 15 ng/mL
Cocaine 300 ng/mL 150 ng/mL
Opiates 2000 ng/mlL* 2000 ng/mlL*
Amphetamines 1000 ng/mL 500 ng/mL
PCP 25 ng/mL 25 ng/mL
*raised from 300 ng/ml in 1998
• Ibuprofen
• Decongestants
• Diet pills
• Antibiotics
• Others
• Legal drugs
• Poppy seeds?
False Positives
True Positives
ibuprofen
NH2
N
Selegiline
levoamphetaminen
Breathalyzer
• Measurement of blood alcohol content
http://hasylab.desy.de/news__events/research_highlights/archive/the_fate_of_ecotoxic_hexavalent_chromium_in_the_environment/i%20%20ndex_eng.html
"The Red Deer Advocate", Red Deer, Alberta, Canada
Forensics
• Identification of Unknown Compounds– Patient symptoms– Appearance of tablet/capsule– Microscopy– Organic chemistry
• Physical properties• Functional groups• Chromatography• Spectroscopy
Forensics
• Ninhydrin
• Luminol
O
O
O
H2O
O
O
OH
OH
R NH2
O
N
O
R
NH
NH
NH2 O
O
[O]
O
O
NH2 O
O
+ N2
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