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Lab Test Dictionary

Vitamin B3 (91029)

Methodology

Chromatography/Mass Spectrometry

Synonyms

Nicotinic Acid; Nicotinamide; Niacin

Specimen Type

Serum or Plasma

Performing Lab

Quest Diagnostic Valencia

Epic ID

Other Reference Test

Lab Test Days

Tuesday, Thursday, Saturday

Standard TAT

2-4 Days

Collection Information

Specimen Required

2-4 mL Blood

Container Type

Red Top (No Additive)

Collection Instructions

Plasma collected in an EDTA (lavender-top) tube is also acceptable.

Processing Information - Lab Use Only

Transport Temperature

Frozen-Only

Specimen Stability

Room Temp=Unacceptable; Refrigerated=Unacceptable; Frozen=30 Days

Rejection Criteria

Serum separator tube (SST)

Test Volume Required

2 mL Serum or Plasma

Minimum Test Volume

1 mL Serum or Plasma

Included Tests

Nicotinamide and Nicotinic Acid.

CPT Codes

84591

Revised

02-23-20