Phenytoin PTN
| Method(s) | Particle Enhanced Turbidimetric Inhibition Immunoassay |
|---|---|
| Synonym | Dilantin® |
| Specimen Required | |
| Collect | One 3 mL plain red top tube (preferred). Also acceptable: heparinized plasma |
| Transport | 1 mL serum at 2-8ºC. |
| Stability | Ambient: 24 hours Refrigerated: 48 hours Frozen: 5 months |
| Unacceptable Conditions | Specimens in gel barrier tubes |
| Schedule | Daily |
| Billing Code | 1010149 |
| CPTCode | 80185 |
| Preferred Specimen Collection Device(s) | |
| Reference Interval | |
|
10.0-20.0 mcg/mL |
|
