46555:CAFFEINE

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46555:CAFFEINE
Methodology: Enzyme-Multiplied Immunoassay Techique (EMIT)
Edit Date: 2/28/2005
Performed: Daily
Released: Same day
CPT Code: 82491
Specimen Collection Details
Collection: One 7.5 mL serum separator tube (SST). For newborns, collect 0.5 mL whole blood in a pediatric serum separtor tube (SST).
Handling: Centrifuge SST and store serum refrigerated at 2-8° C.
Standard Volume: 0.5 mL serum.
Minimum Volume: 150 µL serum.
Transport: Refrigerated at 2-8° C.
Comments: Pharmacokinetic factors influence the correct time for specimen collection after the last drug dose.
Rejection Criteria: Plasma.

Reference Range:
5-20 µg/mL