Days Set Up
Varies; test performed once per week
Analytic Time

3 - 15 days

Soft Order Code

Test Updated:


Nicotinic Acid

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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

Test Overview

Test Methodology

High Performance Liquid Chromatography (HPLC)

Test Usage
Reference Range

Adult (>or=10 years): 0.50 - 8.45 mcg/mL; Pediatric (<10 years): 0.50 - 8.91 mcg/mL.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Onsite

Collect specimen in a lavender top tube. Protect specimen from light within 15 minutes of collection.

Collection Offsite

Collect specimen in a lavender top tube. Centrifuge, aliquot plasma into a plastic vial and freeze within 12 hours of collection. Protect specimen from light within 15 minutes of collection.

Lavender Top Tube
Normal Volume
4 mL EDTA plasma
Minimum Volume
2 mL EDTA plasma

Billing Information

CPT Code
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.