Test Details
Mnemonic
TOPIR
Ordering Code
1752050
CPT-4 Code(s)
80201
Specimen Information
Collect
Red top
Specimen Preparation
Centrifuge, separate serum from cells within 6 hours and send 1.0 mL serum in a screw capped plastic vial.
Minimum Volume
0.5 mL
Transport Temperature
Refrigerated
Rejection Criteria
Serum separator tube (SST), grossly lipemic, hemolyzed, and icteric specimens.
Stability
Room temperature: Unacceptable
Refrigerated: 7 days
Frozen: 14 days
Refrigerated: 7 days
Frozen: 14 days
Methodology
High Performance Liquid Chromatography/Tandem Mass Spectrometry
Reference Range
2 - 20 µg/mL
Performing Laboratory
Warde Medical Laboratory
New York DOH Approval Status
No