Test Details
Mnemonic
CPEP
Ordering Code
1000780
CPT-4 Code(s)
84681
Specimen Information
Collect
Serum separator tube (SST)
Specimen Preparation
Centrifuge, separate serum from cells and freeze within 1 hour of collection. Send 1.0 mL serum frozen in a screw capped plastic vial. CRITICAL FROZEN.
Alternate Specimen
Red top
Minimum Volume
0.5 mL
Transport Temperature
Critical frozen
Rejection Criteria
Grossly icteric and lipemic specimens, hemolyzed specimens, and plasma
Stability
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 14 days
Refrigerated: Unacceptable
Frozen: 14 days
Methodology
Chemiluminescence
Reference Range
0.8 - 3.9 ng/mL
Performing Laboratory
Warde Medical Laboratory