Methodology: Immunoturbidimetric
Performed: Mon – Fri
Reported: Within 24 hours

Specimen Required:
Collect: One 5 mL lt. blue (3.2% Sodium citrate)
Transport: Whole blood, if transported to the lab within 4 hours of collection
Remarks: If unable to transport immediately, separate plasma from cells and freeze
Unacceptable Conditions: Serum
Stability: Ambient: Whole blood - 4 hours
Refrigerated: Plasma -  8 hours
Frozen: Plasma - 1 month

CPT Code: 85379