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PHENOBARBITONE, SERUM

Synonym(s):
Lab Section Category
View write-up
Specimen Required

​3 mL plain blood

Due to phenobarbital's long elimination half-life, the actual sampling time is unimportant. However while making comparative measurements, the sampling time should be consistent.  

Method

​Immunoassay

Reference Interval / Value

​Therapeutic Range : From 0 day : 15.0 - 40.0 mg/L

Turnaround Time

​Mean = 4 hrs, Range: 3 – 5 hrs

Day(s) Test Set up

​Daily

Last Updated - 13 Jun 2025