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Vitamin B3 and Metabolites, Plasma

Vitamin B3 and Metabolites, Plasma

Alternate Test Name

Niacin, Nicotinic Acid, Nicotinamide, Nicotinuric Acid

Epic Mnemonic
Sunquest Mnemonic

LAB3352
VITB3B

Category

Sendouts

Methodology

Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)

Test Performance Schedule

Tuesday

Result Availability

2 – 9 days

Specimen Required

Container

Lavender top (EDTA) tube

Volume

Pref. Vol.: 2.0 mL
Min. Vol.: 0.75 mL

Collection Instructions

• Routine venipuncture
• Spin, separate, and transfer plasma to plastic vial within 2 hours of collection
• Refrigerate

Transportation Instructions

Refrigerated

Stability

• Room Temperature: 21 days
• Refrigerated: 28 days
• Frozen: 28 days

Causes for Rejection

Not applicable

Remarks

Test includes:
Nicotinic Acid (Niacin)
Nicotinamide
Nicotinuric Acid Cutoff

Testing of nonfasting specimens can result in elevated plasma vitamin B3 concentrations, particularly in patients with dietary supplement use or patients on niacin treatment

CPT Codes

84591

Effective/Revised

4/19/22

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