Test Overview
Test Methodology
Kinetic Immunoassay (KIMS).
Test Usage
Evaluate phenytoin toxicity
Reference Range *
1-2 mcg/mL (Approximately 10% of the total drug concentration). Toxic levels: greater than 3 mcg/mL.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
Days Set Up
Daily, 24 hrs.
Analytic Time
2 hours
Soft Order Code
FDIL
MiChart Code
Phenytoin Level, Free
Synonyms
- Dilantin, Protein Free
- Free Dilantin
- Free Phenytoin
- FDIL
- FREE DILANTIN LEVEL
Laboratory
Chemical Pathology
Section
Automation
Specimen Requirements
Billing
CPT Code
80186
Fee Code
33190
LOINC
3969-3