Cannabinoidsusubql
Key facts at a glance
- LOINC
- 8177-8
- Short code
- CANNAB
- Synonyms
- Cannabinoids Usub Ql
- Category
- chemistry
- Sample
- serum
- Container
- Red-top serum tube (no anticoagulant) or serum separator tube (SST); chain-of-custody container required for medico-legal testing
- Units
- N/A
- Ref low
- 20
- Ref high
- 50
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- Immunoassay screening with confirmatory Gas Chromatography-Mass Spectrometry (GC-MS) or Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
- CPT
- 80307
- SNOMED
- 386746004
- Specimen volume
- 5-10 mL of whole blood yielding 2-4 mL serum
- Stability
- Room temperature: 24 hours; Refrigerated (2-8°C): 7 days; Frozen (-20°C or below): 30 days. Avoid repeated freeze-thaw cycles. For forensic specimens, follow chain-of-custody storage protocols.
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 24–72 hours
- Order
- routine
Reference range
Negative: Cannabinoids not detected (cutoff typically 20-50 ng/mL for screening; 5-15 ng/mL for confirmation of THC-COOH in serum). Positive results indicate presence of cannabinoid metabolites consistent with recent cannabis/marijuana exposure.N/A
No fasting required. Patient should be informed that results may be reported to relevant authorities depending on testing purpose (e.g., workplace, legal, athletic). Chain-of-custody documentation required for forensic/legal specimens.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy