Test Details
Mnemonic
C4
Ordering Code
3000300
CPT-4 Code(s)
86160
Specimen Information
Collect
Serum separator tube (SST)
Specimen Preparation
Centrifuge, separate serum from cells and send 1.0 mL serum refrigerated in a screw capped plastic vial.
Alternate Specimen
Plasma: Green sodium or lithium heparin, lavender EDTA
Serum: Red top
Serum: Red top
Minimum Volume
0.5 mL
Transport Temperature
Refrigerated
Stability
Room temperature: Unacceptable
Refrigerated: 8 days
Frozen: 3 months
Refrigerated: 8 days
Frozen: 3 months
Methodology
Nephelometry
Reference Range
10 - 40 mg/dL
Performing Laboratory
Warde Medical Laboratory
New York DOH Approval Status
Yes