- Patient Preparation
- Plain red.
- Specimen Preparation
- Allow serum specimen to clot completely at room temperature to ensure complete clot formation has taken place prior to centrifugation. Separate serum from cells ASAP or within 2 hours of collection. For plasma specimens, ensure centrifugation is adequate to remove platelets. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.2 mL)
- Storage/Transport Temperature
- Unacceptable Conditions
- Specimens collected in separator tubes, sodium fluoride, potassium oxalate, EDTA tubes. Hemolyzed specimens.
- After separation from cells: Ambient: 8 hours; Refrigerated: 4 days; Frozen: 1 month
Toxic: 14.1 µg/mL or greater
3 months and older: 10.0-20.0 µg/mL
Toxic: 30.1 µg/mL or greater
|Component Test Code*||Component Chart Name||LOINC|
- Phenytoin, Total, Serum
- Total phenytoin