| Test Name | Total T4 |
|---|---|
| Test Number | 550 |
| CPT | 84436 |
| Specimen Container | Serum Separator Tube SST |
| Specimen Type | Serum |
| Volume | 5 mL |
| Turn Around Time | 24-48 Hours |
| Reference Range | 4.5-12.5 ug/dL |
| Stability | Ambient: 1 Day |
| Refrigerated: 7 Days | |
| Frozen: 30 Days | |
| Rejection Criteria | Gross hemolysis, Incorrect tube |
| Set Up Schedule | Monday-Saturday |
| Methodology | Chemiluminescence Immunoassay |