Test Code NPHENR Phenytoin (Dilantin), Free and Total
Additional Codes
This panel includes both free and total phenytoin
Tests are also orderable separately
Specimen
Draw blood in plain red top tube. 2.0 ml serum required.
Note: Label specimen with patient’s name (first and last), date of birth, date and time of draw, and phlebotomist’s initials.
Performing Location
NORDX
CPT Code
80186 Phenytoin, free
80185 Phenytoin, total
Collection Container
Plain red top tube
Specimen Transport Temperature
Refrigerated
Day(s) Test Set Up
Monday through Sunday
Volume
2.0 ml
Units of Measure
ug/mL
LOINC
3969-3
Methodology
Immunoassay