We didn’t invent the lab test,
We simply perfected it.
Back THYROXINE INDEX, FREE (FTI) | |
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| Test Code: FTI | Specimen Collection: Serum |
| Component:
| Method:
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| Collection Notes: Serum is the recommended sample type for this assay. | |
| Clinical Utility: The results of T Uptake along with T4 are combined mathematically to provide an estimate of the free hormone concentration. | |
| CPT Code: 84436, 84479 | Testing Location: AML |
SPECIMEN/STABILITY TYPETemperature:Serum (1 mL) Ambient 8 Hours Refrigerated 48 Hours Frozen >48 Hours | |