Alpha Medical Lab
Total T4 Thyroxine)
Ordered Test Code:
TT4
| Lab Test Component | Requirement |
|---|---|
| Test Name | Total T4 Thyroxine) |
| Alpha’s Order Test Code | TT4 |
| Specimen Collection Tube | SST/1mL |
| Collection Tube Handling | Plasma collected in: Sodium heparin (green-top) or lithium heparin (green-top) tube |
| Minimum Volume | 0.5mL |
| Transport Temperture | Refrigerated |
| Stability | Refrigerated: 7 days; Frozen: 28 days |
| Collection Instructions | 1mL serum |
Clinical Significance
For diagnosis of hypothyroidism and hyperthyroidism.
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