Thyroxine
Specimens Requirements:
| Patient Preparation: | None |
| Specimen Type: | Serum |
| Container / Tube Type: | SSTII, Yellow Top, 5 mL, or Plain, Red Top, 6 mL, or 3 microtainers (SSTII) |
| Minimum Volume: | 5 mL |
| Collection instructions: | NA |
Sample Stability:
| Ambient (20 – 25°C): | 4 days (after separation from cells) |
| Refrigerate (2 – 8°C): | 2 weeks / 8 days (after separation from cells) |
