Test Code 8132 Phenytoin
Purpose
Detecting the level of Phenytoin in the system.
Performing Laboratory
Copley Hospital
Methodology
Turbidimetric Rate
Specimen Requirements
Specimen Type: Blood (Plasma or Serum)
Preferred: Light-Green Top
Acceptable: Gold Top
Specimen Volume: Full Tube
Specimen Minimum Volume: 2 mL
Collection Instructions:
1. Label specimen with patient’s full name, date of birth,
date & time of collection and person collecting.
2. If delay in specimen transport > 1 hour, centrifuge tube.
3. Refrigerate specimen during transport.
Reference Values
Therapeutic Concentration: 10 - 20 µg / mL
Critical: > 25 µg / mL
Stability
Refrigerated: 2 Days
Day(s) Performed
Daily
Available STAT
Analytical Time: 1 Day
Aliases
Phenytoin
Dilantin
PTN
Test Classification & CPT Coding
80185