Niacin (Vitamin B3) VITB3
| Method(s) | Quantitative High Performance Liquid Chromatography |
|---|---|
| Specimen Required | |
| Collect | 5 mL lavender (EDTA) top tube. |
| Transport | PROTECT FROM LIGHT. Transfer 4 mL plasma to an amber transport vial and freeze immediately (Min: 1 mL). |
| Remarks | CRITICAL FROZEN: Separate specimens must be submitted when multiple tests are ordered. |
| Stability | Ambient: Unacceptable; Refrigerated: 8 days; Frozen: 2 months |
| Unacceptable Conditions | Thawed specimens or specimens not protected from light. Grossly hemolyzed or lipemic specimens. |
| Schedule | Varies |
| Billing Code | 5011877 |
| CPTCode | 84591 |
| Preferred Specimen Collection Device(s) | |
