Thyroid Profile
| Thyroid Profile | | | |
| Number | | 000455 |
| CPT | | 84436; 84479 |
| Synonyms | | Thyroid Profile A (Euthyroid) Hormone-Binding Ratio (T3 Uptake) ; '99 Thyroid Profile (Compliance) |
| Test Includes | | Free thyroxine index; T3 uptake (THBR); thyroxine (T4) |
| Special Instructions | | Do not change this profile in any way. |
| Specimen | | Serum |
| Volume | | 1 mL |
| Minimum Volume | | 0.5 mL (Note: This volume does not allow for repeat testing.) |
| Container | | Red-top tube or gel-barrier tube |
| Collection | | If a red-top tube is used, transfer separated serum to a plastic transport tube. |
| Storage Instructions | | Refrigerate |
| Use | | FTI is a physiologic index of metabolic activity that correlates with free thyroxine (T4) |
| Methodology | | Cloned enzyme donor immunoassay (CEDIA) |
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