Specimen:

Serum or Plasma

Collection Medium:

Alternate
Collection Media:

Green top tube (Na Heparin), Lavender top tube (EDTA), Pink top tube 
(EDTA sprayed)

Minimum:

Adult Preferred Minimum:  4 mL serum or plasma
Adult/Pediatric Absolute Minimum: 2.0 mL serum or plasma

Rejection Criteria:

Specimens exposed to repeated freeze/thaw cycles.  Separator tubes and 
plasma or whole blood from lt. blue (sodium citrate).

Analytic Time:

5 days upon receipt at reference laboratory

Interpretive Data:

Drugs covered: 9-carboxy-THC
Positive cutoff: 4 ng/mL

The absence of expected drug(s) and/or drug metabolite(s) may indicate 
non-compliance, inappropriate timing of specimen collection relative to 
drug administration, poor drug absorption, or limitations of testing. 
The concentration value must be greater than or equal to the cutoff to 
be reported as positive.

For medical purposes only; not valid for forensic use.

Methodology:

Gas Chromatography-Mass Spectrometry and/or Liquid 
Chromatography-Tandem Mass Spectrometry

CPT Code:

82542