Vitamin B3/Niacin
Test Mnemonic
B3VIT
CPT Codes
- 84591 - QTY (1)
Aliases
- Nicotinic Acid
Includes
- Nicotinic Acid (Niacin)
- Nicotinamide
- Nicotinuric Acid
Performing Laboratory
ARUP
FDA Category
Laboratory Developed Test
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Plasma | EDTA (Lavender) | Refrigerated | Separate plasma from cells ASAP or within 2 hours of collection and transfer to standard aliquot tube. Separate specimens must be submitted when multiple tests are ordered. |
Alternate Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Serum | No additive (Red) | Refrigerated | Separate serum from cells ASAP or within 2 hours of collection and transfer to standard aliquot tube. Separate specimens must be submitted when multiple tests are ordered. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.4 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | 24 hours |
| Refrigerated | 1 week |
| Frozen | 1 month |
Days Performed
Varies
Turnaround Time
4 - 10 days
Methodology
| Name | Description |
|---|---|
| High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS) |
Reference Range
Special Info
Separate specimens must be submitted when multiple tests are ordered. Gel separator tubes will be rejected. This test is New York State approved.
Clinical Info
This test is useful as a therapeutic drug monitoring/toxicological test associated with niacin (Vitamin B3) supplementation.