91477      Niacin
Specimen:
  Collect: One 4 mL Lavender (EDTA)  
  Submit: 4 mL (Min:2 mL) Plasma. Submit Frozen. Submit in a Standard Transport Tube.  
  Special Handling: Critical Frozen
Separate aliquot required for each frozen test ordered
Samples must be separated and frozen within 15 minutes 
  Rejection Criteria: Grossly Hemolyzed Samples
Grossly Lipemic Samples
Lipemic Samples
Specimen not protected from light 
  Stability: Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 1 Month(s); Incubated: Unacceptable 
Methodology: High Performance Liquid Chromatography 
Performed: Varies 
Reported: 4-10 Day(s) 
CPT Codes:
84591
Interpretive Data:
General Reference Range : 0.50-8.45 mg/mL