Vitamin B3

Alphabetical Test listing

Vitamin B3-994

Test name:

Vitamin B3

Test number:

994

Excellian order number:

LAB994

Abbreviation:

MSO

Alternate names:

Niacin
Nicotinamide
Nicotinin acid

Tests included:

Nicotinamide
Nicotinic Acid

Useful for:

Measurement of vitamin B3 level as nicotinic acid and nicotinamide

Specimen type:

Serum

Collection container:

Red serum vial/tube - 5 mL

Volume:

1.5 mL

Minimum volume:

1.0 mL

Processing instructions:

Allow sample to clot
Spin
Transfer serum to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp), labelled as serum, within two (2) hours of sample collection
Freeze

Transport container:

Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp)

Alternate specimen type:

EDTA plasma

Alternate collection container:

Lavender (EDTA), 4mL

Alternate collection instructions:

Immediately following collection, mix sample thoroughly by gently inverting 8 - 10 times, to prevent clotting

Alternate processing instructions:

Spin
Transfer plasma to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp), labelled as EDTA plasma, within two (2) hours of sample collection
Freeze

Transport and stability:

Frozen (strict) - 14 days

Freeze/thaw cycles - stable x3

Reason for rejection:

Gel-barrier tube
Specimen not frozen

Performing lab:

LabCorp Burlington (070115): R-NX

Days set up:

Mo - Fr

TAT:

10 days

Method:

Liquid chromatography/tandem mass spectrometry (LC/MS-MS)

Reference ranges:

Nicotinic acid: 0.0 − 5.0 ng/mL
Nicotinamide: 5.2 − 72.1 ng/mL

CPT codes:

84591

LOINC code:

Nicotinamide: 56961-6
Nicotinic Acid: 18244-4

Date created:

05/22/2019

Revised date:

06/13/2023

Review date:

05/30/2023