Phenytoin
Specimens Requirements:
| Patient Preparation: | None |
| Specimen Type: | Serum |
| Container / Tube Type: | Plain, Red top, 6mL |
| Minimum Volume: | 6 mL |
| Collection instructions: | NA |
Sample Stability:
| Ambient (20 – 25°C): | 8 h (after separation from cells) |
| Refrigerate (2 – 8°C): | 1 week / 4 days (after separation from cells) |

