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Laboratory Medicine

Test Directory / Urine Drugs of Abuse

Urine Drugs of Abuse

Urine monovette or white topped universal (no additives)

TestUrine Drugs of Abuse
Common AbbreviationsDAU
Tube typeUrine monovette or white topped universal (no additives)
Clinical IndicationScreen for recent use of drugs of abuse. Seven drugs of abuse are included in the screen, these are amphetamines/ecstasy, benzodiazepines, cannabis (THC), cocaine, methadone metabolite (EDDP), opiates and heroin metabolite (6-AM). PLEASE NOTE THAT THIS IS A CLINICAL SERVICE ONLY AND IS NOT APPROPRIATE FOR WORKPLACE SCREENING OR OTHER NON-CLINICAL SITUATIONS.
Specimen TypeUrine
Sample typeRandon Urine
Minimum Volume1mL
Special PrecautionsNo special requirements
Stability5 days at 2-8°C
Turnaround TimeInpatient: 6 hours Outpatient/ GP: 24 hours
Reference IntervalInterpretative result provided
LimitationsThese assays are prone to interference by certain compounds that may have been added to the urine in order to conceal the presence of drugs. In addition, some assays are prone to interference from structurally similar drugs or compounds. For example, poppy seeds can contain opiates meaning the ingestion of products containing poppy seeds can cause a positive opiate screen result. Similarly, stimulant drugs that are routinely available over the counter can give positive amphetamine screen results. Also, in very rare cases interference by antibodies to E.coli ?– galactosidase may result in artificially high results. All positive amphetamine results are sent to a referral laboratory for confirmatory testing. Similarly, all positive opiate results which have a corresponding negative heroin metabolite result are sent to a referral laboratory to allow for the identification of the opiate present.
NotesDrugs will remain detectable in urine for the following amount of time after consumption: Amphetamines: 1-3 days Benzodiazepines: 12 hours to 6 weeks (depends on the type of benzodiazepine) Cannabis: Up to 1 month (depends on previous consumption) Cocaine: 1-3 days Methadone metabolite: 1 day Opiates: 1-2 days 6-monoacetylmorphine: 12-24 hours
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