Back

Cannabinoids Screen, Random Urine

Alternative Names/Synonyms	Tetrahydrocannabinol, THC
Laboratory	Core Laboratory & Transfusion Medicine
Sub-section	Biochemistry
Specimen Type	Urine
Test Code	THCSU

Clinical Significance

Screening for potential presence of tetrahydrocannabinol (THC) and/or THC-related metabolites. Urine drug screen results should always be considered presumptive and followed up with confirmatory testing if needed.

Specimen Requirements (Sample Type)

Urine

Specimen Requirements (Volume (mL))

0.5 mL

Specimen Requirements (Tube Type)

Sterile Urine Container
Clear Top Urine Tube
Collection Containers – Tube Types

Collection Requirements

Collection Instructions

Sample Stability

Fridge: 5 days @ 2-8°C

Cause for Rejection

Specimen Acceptability and Transport Guidance

Instrument, Methodology

Roche cobas c 702, immunoassay

Test Availability

24 hours a day, 7 days a week

STAT Turnaround Time

1 hour

Routine Turnaround Time

3 hours

Reference Ranges

Negative: < 300 µg/L
Positive: >= 300 µg/L

In case of discrepancies, always interpret results using reference ranges as stated on laboratory reports and/or electronic patient chart.

Laboratory Contact Information

416-586-4800 extension 4688