Cannabinoids – Semi Quant
| Test Mnemonic | THC +, Semi Quant |
|---|---|
| CPT Code | 83516 |
| Also Known As | Cannabis, Carboxy-THC, Hashish, Hemp, Marihuana, Marijuana, Mary Jane, Reefer, Tetrahydrocannabinol, THC, Weed |
| Specimen Type | Urine |
| Specimen Container | Plastic container w/ tightly fitting cap |
| Alternate Speciman Type | None |
| Preferred Volume | 1.0 mL |
| Minimum Volume | 0.5 mL |
| Specimen Collection | Routine voided urine collection |
| Specimen Process | Collect freshly voided urine in plastic containers |
| Specimen Transport Storage | Refrigerated |
| Specimen Stability | 3 days refrigerated (2-8°C); 3 months frozen (-20°C or less) |
| Specimen Rejection | • Improperly labeled. • Incomplete information on the requisition. • Too old for processing. • Failure to meet volume criteria. • Leaking primary or secondary specimen container. • Wrong collection container for test ordered. • Gross contamination. • Improper storage |
| Methodology | Enzyme Immunoassay |
| Use | For the semi-quantitative determination of cannabinoids in urine. |
| Clinical Signifigance | Cannabis has been used for its euphoric effects for over 4000 years. It is one of the most commonly used illicit drugs in the United States. Marijuana is frequently self-administered for its mood-altering properties. Chronic use has been shown to cause reversible psychological impairment, an abstinence syndrome, and development of tolerance. At low dose, it produces mixed depressant and stimulant effects, while at higher dose it acts as a CNS depressant. Approximately 70 % of THC is excreted in feces and urine within 72 hours of administration. |
| Reference Range | <25 ng/mL is Negative |
| Day Run | Mon-Fri |
| Time Run | As Received |
| Time Reported | 3 days |
| Test Type | Tox |
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