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Methodology: Gas Chromatography (CG)
Edit Date: 6/1/2009
Performed: Monday, Wednesday, Friday
Released: 72 hours after setup at PeaceHealth Laboratories’ reference lab.
CPT Code: 82491-90
Specimen Collection Details
Collection: One 15 mL plain red top tube. Also acceptable: Plasma, any type. Do not use serum separator tube (SST) or plasma separator tube (PST).
Handling: Centrifuge and separate serum or plasma into a plastic vial. Wrap in foil to protect from light. Freeze.
Stability: 7 days frozen. Unstable ambient or refrigerated.
Standard Volume: 4 mL serum or plasma.
Minimum Volume: 2 mL serum or plasma.
Transport: Frozen.
Rejection Criteria: Specimen not protected from light; specimen not frozen; specimen collected in SST or PST tube.

Reference Range:
Therapeutic: 1-100 ng/mL

PeaceHealth Laboratories