We didn’t invent the lab test,
We simply perfected it.
Notification Type
Back T4, FREE (FREE THYROXINE) | |
|---|---|
| Test Code:151 | Specimen Collection:Serum |
| Component: T4, Free | Method: IA |
| Collection Notes:Serum is the recommended sample type for this assay. | |
| Clinical Utility:Free T4 is measured together with TSH when thyroid function disorders are suspected. The determination of fT4 is also suitable for monitoring thyrosuppressive therapy. | |
| CPT Code:84439 | Testing Location:AML |
SPECIMEN/STABILITY TYPETemperature:Serum (1 mL) Ambient 8 Hours Refrigerated 5 Days Frozen 30 Days EDTA plasma (1 mL) Ambient 8 Hours Refrigerated 5 Days Frozen 30 Days Heparinized plasma (1 mL) Ambient 8 Hours Refrigerated 5 Days Frozen 30 Days | |