THC METABOLITE, SERUM or PLASMA, QUANTITATIVE

Specimen Required
Draw blood in a red-top tube. Separate serum from cells within 2 hours of collection. Send 1.0 mL serum (0.5 mL minimum) refrigerated in a screw-capped plastic vial.

Alternate Specimen
Plasma: Gray (sodium fluoride/potassium oxalate), green (sodium heparin), lavender (EDTA).

Rejection Criteria
SST or PST, hemolysis, light blue (sodium citrate)

Methodology
Quantitative Liquid Chromatography/Tandem Mass Spectrometry

Stability
Room temperature: 7 days; Refrigerated: 14 days; Frozen: 3 years

Reference Range
By report

Performed
Sunday-Saturday

Turnaround Time3-6 days
Test CodeTHCSQ
CPT-4 Code (s)
80349 (G0480)
LOINC Codes
8170-3

Warde
Medical
Laboratory