Urea
Specimens Requirements:
| Patient Preparation: | None |
| Specimen Type: | Serum |
| Container / Tube Type: | SSTII, Yellow top, 5mL or Plain, Red top, 6mL, or PST, Light green top, 5mL |
| Minimum Volume: | 5 mL |
| Collection instructions: | NA |
Sample Stability:
| Ambient (20 – 25°C): | 1 week (after separation from cells) |
| Refrigerate (2 – 8°C): | 5 days / 1 week (after separation from cells) |
