| Test CODE | NAME |
|---|
L457
Thyroxine (T4), Thyroxine-binding Globulin (TBG), and T4 − TBG Index
| Methodology: | Immunochemiluminometric assay |
| Performed: | Mon-Sat |
| Reported: | 2-3 days |
| Specimen Required: | Collect: Serum Separator Tube (SST) Or Red Top Tube - 1 ml serum.
Specimen Preparation: Allow specimen to clot completely at room temperature . Separate serum from cells ASAP or within 2 hours of collection. If tube other than a gel-barrier tube is used, transfer separated serum to a plastic transport tube.
Causes for Rejection : Plasma specimen
Storage/Transport Temperature: Refrigerated.
Stability: After separation of cells: Refrigerated: 1 week , Frozen: 1 month
NOTE: * This test is approved for all states. *
Performing Lab
LabCorp Laboratory Corporation of America
|
| CPT Code(s): | 84436, 84442 |