Drug Screen Flashcards
What is the most common assay method used for urine drug screens?
enzyme immunoassay (EI)
Should pseudoephedrine be included in a urine drug screen?
yes - amphetamine screen
Urine drug screen sample size?
> 30mL
split 30mL into two different containers
Urine drug test temperature?
90-100F
Urine drug test pH?
4.5-8.5
Which testing method is used for confirmation and takes more time?
gas chromatography mass spectrometry (GC-MS)
can still miss some drugs (hydromorphone)
6 things tested for per federal (DHHS) guidelines for the workplace?
- marijuana
- cocaine
- opiates
- PCP
- amphetamines
- methamphetamine
Urine drug screens do not currently test for what very potent synthetic opioid?
carfentanil
100x more powerful than morphine
Is carfentanil overdose responsive to naloxone?
no
Which SSRI can trigger as a benzo on a drug test?
sertraline
Which non-SSRI GAD drug can trigger a drug test?
bupropion
Which diabetic drug can trigger a drug test?
metformin
What antiviral can trigger a false positive?
efavirenz
Which two benzos are detected with EI assay?
- nordiazepam
- oxazepam
Which two opioids are tested for on EI assay?
- morphine
- codeine
The below can cause a false positive for what drug?
venlafaxine, O-desmethylvenlafaxine, ibuprofen, diphenhydramine, lamotrigine, zolpidem
PCP
Can eating a poppy seed bagel cause you to fail a drug test?
yes
Passive marijuana smoke or ingestion of hemp foods does not cause positive test.
a. true
b. false
a. true
What is the detection window for heavy marijuana use?
30 days
What is the detection window for daily marijuana use?
10 days
Single/occasional: 3 days
moderate 4-6/week: 5 days
Naloxone should be used even if a urine drug screen is negative.
a. true
b. false
a. true
How long can hair sample be stored?
indefinitely
Hair must be blow dried and sample refrigerated for hair drug test.
a. true
b. false
b. false
Wet hair must be gently dried
refrigeration/freezing causes swelling and drug loss
Hair sample segments should be __ to __ mm long
10, 30
