Sorted By Test Name - Mayo Medical Laboratories

DAU7
505310
DAU9
505320
positive confirmed by GC/MS at the following threshold
concentrations:
DRUG SCREENING CONFIRMATION
Amphetamine 50 ng/ml 10 ng/ml
Barbiturates 100 ng/ml 100 ng/ml
Benzodiazepines 20 ng/ml See individual drug
Cocaine 25 ng/ml 30 ng/ml
Methadone 25 ng/ml 50 ng/ml
Methaqualone 100 ng/ml 100 ng/ml
Opiates 10 ng/ml 10 ng/ml
Phencyclidine 8 ng/ml 8 ng/ml
Propoxyphene 50 ng/ml 50 ng/ml
THC (marijuana) MTB 5 ng/ml 2 ng/ml
Drugs of Abuse Screen, DAU7, Urine
Clinical Information: This test uses immunologic testing for drugs of abuse by class, and screens for
the presence of amphetamines, barbiturates, benzodiazepines, cocaine metabolites, opiates, phencyclidine,
and tetrahydrocannabinol in urine. Positive immunologic results are confirmed by gas
chromatography-mass spectrometry (GC-MS) or liquid chromatography-tandem mass spectrometry
(LC-MS/MS).
Useful For: Detecting drug abuse involving: amphetamines, barbiturates, benzodiazepines, cocaine,
opiates, phencyclidine, and tetrahydrocannabinol This test is intended to be used only by a qualified drug
treatment counselor or physician.
Interpretation: A positive result indicates that the patient has used the drugs detected in the recent
past. For information about drug testing, including estimated detection times, see Drugs of Abuse Testing
at http://www.mayomedicallaboratories.com/articles/drug-book/index.html Creatinine and specific gravity
are measured as indicators of specimen dilution.
Reference Values:
Negative
The specific drug identified will be reported.
EMIT cutoff concentrations
Amphetamines: 500 ng/mL
Barbiturates: 200 ng/mL
Benzodiazepines: 200 ng/mL
Cocaine (benzoylecgonine-cocaine metabolite): 150 ng/mL
Opiates: 300 ng/mL
Phencyclidine: 25 ng/mL
THC: 50 ng/mL
Results of this test are confirmed and should be considered definitive. Specimens are normally kept for 2
weeks after Mayo Medical Laboratories New England receipt date.
Clinical References: Porter WF, Moyer TP: Clinical toxicology. In Tietz Textbook of Clinical
Chemistry. Fourth edition. Edited by CA Burtis, ER Ashwood. Philadelphia, PA, WB Saunders Company,
1993, pp 1155-1235
Drugs of Abuse Screen, DAU9, Urine
Clinical Information: This test uses immunologic testing for drugs by class and screens for the
presence of amphetamines, barbiturates, benzodiazepines, cocaine, metabolite, methadone, opiates,
phencyclidine, propoxyphene, and tetrahydrocannabinol in urine. Positive immunologic results are
confirmed by gas chromatography-mass spectrometry (GC-MS) or liquid chromatography-tandem mass
Current as of January 4, 2013 7:15 pm CST 800-533-1710 or 507-266-5700 or MayoMedicalLaboratories.com Page 643