Therapeutic Range: 10.0 - 20.0 mg/L
Critical results notification: 30.0 mg/L
Please note: from 01/10/2024 units have changed from umol/L to mg/L.
To convert: mg/L x 3.97 = umol/L
Therapeutic Range Source: Alinity c Phenytoin Reagent kit insert, July 2018
Test performed on Abbott Alinity
Measured (Total) Phenytoin consists of "(protein) bound" and "free" (pharmaceutically active) drug. Where plasma albumin is reduced, calculated free phenytoin may be requested to provide a better indication of possible drug toxicity. |