Test Details
Mnemonic
TBG
Ordering Code
1000837
CPT-4 Code(s)
84442
Specimen Information
Collect
Serum separator tube (SST)
Specimen Preparation
Centrifuge, separate serum from cells and send 1.0 mL serum in a screw capped plastic vial.
Alternate Specimen
Serum: Red top
Minimum Volume
0.5 mL
Transport Temperature
Frozen
Rejection Criteria
Hemolyzed, grossly lipemic specimens, plasma
Stability
Room temperature: Undetermined
Refrigerated: 2 days
Frozen: 30 days
Refrigerated: 2 days
Frozen: 30 days
Methodology
Chemiluminescence
Reference Range
14.0 - 31.0 µg/mL
Performing Laboratory
Warde Medical Laboratory
New York DOH Approval Status
Yes