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Nicotine and Cotinine, Serum/Plasma
Test Code902157
CPT Codes
80323<br /> Clinical Trial Code
Preferred Specimen
1 mL serum collected in a red-top tube (no gel)
Minimum Volume
0.5 mL serum or plasma
2 mL whole blood
2 mL whole blood
Other Acceptable Specimens
1 mL plasma collected in an EDTA (lavender-top) tube, or EDTA (royal blue-top) tube • 4 mL whole blood collected in an EDTA (lavender-top) tube
Instructions
Serum and EDTA plasma, spin and transfer serum and plasma into a screw-cap vial.
Specimens collected in Serum Separator Tubes (SST) and grossly hemolyzed samples are not acceptable.
Specimens collected in Serum Separator Tubes (SST) and grossly hemolyzed samples are not acceptable.
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Serum and plasma
Room temperature: 72 hours
Refrigerated: 21 days
Frozen: 30 days
Whole blood
Room temperature: 72 hours
Refrigerated: 21 days
Frozen: Unacceptable
Room temperature: 72 hours
Refrigerated: 21 days
Frozen: 30 days
Whole blood
Room temperature: 72 hours
Refrigerated: 21 days
Frozen: Unacceptable
Methodology
Chromatography/Mass Spectrometry
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostic. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Set up: Mon-Sat; Report available: 3 days
Reference Range
Nicotine | |
Smokers | 2-10 ng/mL |
Nonsmokers | ≤ 4 ng/mL |
Cotinine | |
Smokers | 16-145 ng/mL |
Nonsmokers | ≤ 8 ng/mL |
Clinical Significance
This assay is used for the detection of nicotine and cotinine in serum and plasma to determine the tobacco exposure status of the individual. Nicotine has a short half-life of approximately forty minutes; Its presence may indicate recent tobacco exposure. Cotinine, the major nicotine metabolite, has a half-life of 24 hours and is detectable for several days after cessation of tobacco exposure.