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Vitamin B3

Test Code
91029


CPT Codes
84591

Includes
Nicotinamide and Nicotinic Acid


Preferred Specimen
1 mL frozen serum collected in a red-top tube (no gel) - protected from light


Minimum Volume
0.5 mL


Other Acceptable Specimens
Frozen plasma collected in a light protected EDTA (lavender-top) tube


Instructions
Pour serum into amber transport tube (preferred) or transport tube wrapped in aluminum foil to protect from light.


Transport Temperature
Frozen


Specimen Stability
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 30 days


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Serum separator tube (SST)


Methodology
Chromatography/Mass Spectrometry

FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule

Set up: Tues, Thurs, Sat; Report available: 2-4 days



Clinical Significance
Nicotinic acid occurs naturally in plants and animals and is also added to many foods as a vitamin supplement.




The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.