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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

1-2 mL Blood

Container Type

Red Top (No Additive)

Collection Instructions

Plasma collected in an EDTA (lavender-top) tube is also acceptable. Protect sample from light.


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

1 mL Serum or Plasma

Minimum Test Volume

0.5 mL Serum or Plasma

Processing Instructions

Protect sample from light. Indicate serum or plasma in flag comments, on specimen and on batch sheet.


Included Tests

Nicotinamide and Nicotinic Acid.


CPT Codes

84591


Revised

5/17/24

Initials

SA