Methodology
Immunoassay (IA)
Specimen Type
Plasma or Serum
Performing Lab
Quest Diagnostics San Juan Capistrano
Epic ID
Other Reference Test
Lab Test Days
Once a Week
Standard TAT
1 Day
Collection Information
Specimen Required
1.8- or 2.7-mL Blood
Container Type
Sodium Citrate (Blue-Top) Tube
Collection Instructions
1-2 mL Blood collected in a red-top tube is also acceptable.
Processing Information - Lab Use Only
Transport Temperature
Refrigerated-OK/Frozen-OK
Specimen Stability
Room Temp: 48 Hours; Refrigerated: 14 Days; Frozen: 21 Days
Rejection Criteria
Gross hemolysis; Received room temp
Test Volume Required
1 mL Plasma or Serum
Minimum Test Volume
0.3 mL Plasma or Serum
CPT Codes
83520
Revised
9/24/25
Initials
SA