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Test and Tubes Database
ID:155 Phenobarbitone/Primidone
Search Links: General Info : Protocols : Patient Info

DescriptionPhenobarbitone is a metabolite of Primidone, use this test to monitor patients on primidone. NOTE: Reporting units changed from mmol/L to mg/L May 1, 2007
IndicationTherapeutic Drug Monitoring.
Additional InfoFor monitoring purposes, blood should not be drawn until a steady state has been attained. This will not be achieved until 2-4 weeks after starting therapy or changing dose. In children the period may be slightly shorter at 1-2 weeks. Renal or hepatic disease may result in increased phenobarbitone concentration. PLEASE NOTE: TEST CAN ONLY BE ADDED TO A SAMPLE WITHIN 8 HOURS OF COLLECTION
Concurrent Testsna
Dietary Requirementsna

InterpretationView results in light of patients clinical status.

Ref. Range (Male)10 - 40 mg/L
Ref. Range (Female)10 - 40 mg/L
Ref. Range (Paed)
Ref. Range NotesNOTE: Reporting units changed from mmol/L to mg/L May 1, 2007
Unitsmg/L


IP Acute TAT- Contact Laboratory
IP Routine TAT12 hours
GP Acute TAT- Contact Laboratory
GP Routine TAT24 hours
Turnround CommentNA
Originally edited by : MC. Last edited on 24/05/2017 08:00:58. Published By Sylvia McLellan on 24/05/2016 08:00:58.