Phenytoin (Dilantin) (LABCORP)

Test Code

99901000153

Alias/See Also

LAB31: Phenytoin (Dilantin) | LABCORP EAP: 007401

CPT Codes
80185x1

Preferred Specimen

LABCORP LAB: RED TOP - PLAIN (Room Temperature) Min Vol: .8

Other Acceptable Specimens

LABCORP LAB: GREEN TOP- NAHEP: (Room Temperature) Min Vol: .8
LABCORP LAB: MICRO RED: (Room Temperature) Min Vol: .8

Transport Temperature

Specimen: Serum or plasma Volume: 1 mL Minimum Volume: 0.3 mL Container: Red-top tube or green-top (heparin) tube. Do not use a gel-barrier tube. The use of gel-barrier tubes is not recommended due to slow absorption of the drug by the gel. Depending on the specimen volume and storage time, the decrease in drug level due to absorption may be clinically significant. Collection: Transfer separated serum or plasma to a plastic transport tube. Draw trough levels immediately prior to next dose. Due to variability of absorption, the trough level may not represent the lowest drug level during the dosing interval, so multiple determinations may be necessary in some patients. Storage Instructions: Refrigerate

Report Available

LABCORP LAB
STAT: 5760 min
Routine: 5760 min
Extended TAT: No TAT min
Timed: 5760 min
Life or Death: 5760 min

Last Updated: March 6, 2023

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.