Phenytoin
Orderable EAP code:
LAB00471
Billable EAP Codes:
80001674 x 1
CPT Codes:
80185 x 1
Lab Section:
Core Lab
Turnaround Time:
Routine: 2 Hours
Urgent: 1 Hour
Test Schedule:
24 hours, 7 days a week.
Units:
mcg/mL
Critical Values:
Greater than 30.0 micrograms/mL
Specimen Requirements:
4 mL blood in a GREEN top, lithium heparin tube.
Do not collect into tubes that contain gel separator.
Pediatric Specimen Requirements:
0.5 mL in a 1.0 mL GREEN top, lithium heparin tube.
Do not collect into tubes that contain gel separator.
Reference Range:
10 to 20 micrograms/mL (Therapeutic)
Comments:
Specimen stability: Separated serum/plasma is stable 8 hours at room temperature or 2 days refrigerated.
Synonyms:
Dilantin, Diphenylan, Diphenylhydantoin, Fosphenytoin, Phenytek