Test Directory
4001 Phenytoin (Dilantin)
Specimen Type
Specimen Stability
Reference Range
Serum-Red top tube
2 days 2-8° C
10.0-20.0 ug/mL
Specimen Requirements
Preferred amount: 1.0 mL Serum
Minimum amount: 0.5 mL Serum
Minimum amount: 0.5 mL Serum
Method
Immunchemiluminometric
Schedule
Mon-Fri
Turn-Around Time
24hrs; Also offered STAT at an additional charge
Instructions/Notes
Centrifuge required?: Yes
Clinical Utility
To determine phenytoin concentration in the blood, to maintain a therapeutic level, and to detect potential for toxicity.
CPT Codes
80185
