91477      Niacin
Specimen:
  Collect: Two 4 mL Lavender (EDTA)  
  Submit: 4 mL (Min:2 mL) Plasma. Submit Frozen. Submit in a Standard Transport Tube.  
  Special Handling: Critical Frozen
Samples must be separated and frozen within 15 minutes 
  Rejection Criteria: Grossly Hemolyzed Samples
Grossly Lipemic Samples
Specimen not protected from light 
  Stability: Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 1 Month(s); Incubated: Unacceptable 
Methodology: High performance liquid chromatography (HPLC); Solid phase immunosorbent 
Performed: Varies 
Reported: 7-12 Day(s) 
CPT Codes:
84591 - Vitamin, Not Otherwise Specified
Interpretive Data:
General Reference Range : 0.50-8.45 mg/mL