Test Details
Mnemonic
CARO
Ordering Code
1004040
CPT-4 Code(s)
82380
Specimen Information
Patient Preparation
Fast for 12 hours prior to collection.
Collect
Serum separator tube (SST)
Specimen Preparation
Centrifuge, separate serum from cells and send 2.0 mL serum frozen in an amber screw capped vial. PROTECT FROM LIGHT. CRITICAL FROZEN.
Alternate Specimen
Serum: Red top
Minimum Volume
1.5 mL
Transport Temperature
Frozen
Rejection Criteria
Refrigerated serum, hemolyzed serum, sample not protected from light
Stability
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 14 days
Refrigerated: Unacceptable
Frozen: 14 days
Methodology
Colorimetric
Reference Range
70 - 300 µg/dL
Performing Laboratory
Warde Medical Laboratory
New York DOH Approval Status
Yes