91232      Vitamin K1
Specimen:
  Collect: One 7.5 mL SST

Also Acceptable
One 10 mL Red Top
One 4 mL Lavender (EDTA) 
  Submit: 2 mL (Min:1.5 mL) Serum. Submit Frozen. Submit in a Standard Transport Tube.

Also Acceptable
2 mL (Min:1.5 mL) Plasma. Submit Frozen. Submit in a Standard Transport Tube. 
  Special Handling: Protect from Light
Separate aliquot required for each frozen test ordered
Separate from cells ASAP
Draw specimen following an overnight (12-hour) fast. Patient should not consume alcohol for one day prior to blood draw.
Separate and freeze, protected from light within one hour of collection. 
  Rejection Criteria: Grossly Hemolyzed Samples 
  Stability: Ambient: Unacceptable; Refrigerated: 1 Month(s); Frozen: 6 Month(s); Incubated: Unacceptable 
Methodology: High performance liquid chromatography (HPLC) 
Performed: Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday 
Reported: 3-7 Day(s) 
CPT Codes:
84597
Interpretive Data:
General Reference Range : 0.10-2.20 ng/mL