Micronutrient, Vitamin B3

Test Code

10191

CPT Codes
84591

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: EDTA (lavender-top) tube - protected from light

Instructions

Patients should be 18 years or greater.

Separate serum or plasma from cells.

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

Reference Range

≥18 years

≤110 ng/mL

Reference range not available for individuals <18 years for this micronutrient test.

Clinical Significance

Vitamin B3 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.