Phenytoin Level

Message
Phenytoin is an anticonvulsant drug that is used to treat epilepsy as well as seizure disorders that are secondary to other diseases.


Test Code
DILAN


Alias/See Also
LAB3000189
Dilantin


CPT Codes
80185

Preferred Specimen
2.0 mL serum collected in a gold serum separator tube (SST)


Minimum Volume
0.5 mL serum


Other Acceptable Specimens
2.0 mL serum collected in an orange rapid clot serum separator tube (RCT)


Specimen Stability
up to one month when refrigerated (2-8oC)
up to 3 months when frozen at <-20oC


Reference Range
Sex Age Reference Ranges
M/F 0 - 3 months 6.0 - 14.0 µg/mL
M/F 3 months - 150 years 10.0 - 20.0 µg/mL


Performing Laboratory
Penn Medicine Lancaster General Health



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.