Test directory: Primidone and Metabolite

Ordering Code 5173
Test Name Primidone and Metabolite
Preferred Specimen Serum
Preferred Container Plain (Red)
Other Specimen/Container Plasma in Sodium Heparin (Green)
Optimum Volume 1 mL
Handling Instructions Separate serum from cells within 2 hours of collection.
Transport Requirements Oahu: Refrigerated
Airline: Refrigerated
Specimen Stability Ambient: 7 Days
Refrigerated: 7 Days
Frozen: 1 Month
Rejection Criteria Separator tubes
Avail. Stat NO
Analytic Time 5 Days
Methodology Immunoassay
Reference Lab  ARUP Laboratories

Reference range(s)

The reference ranges listed below are valid on this date of June 29, 2025.
Component Age Male Norm Male Critical Low Male Critical High Female Norm Female Critical High Female Critical Low Units Add'l info
Primidone ALL ug/mL

Reference...
Reference Interval 5.0-12.0 ug/mL
See report.
Note1
Phenobarbital ALL ug/mL

Reference...
Reference Interval 0-2 Months: 15.0-30.0 ug/mL Toxic: 40.1 ug/mL or greater 3 Months and Older: 15.0-40.0 ug/mL Toxic: 50.1 ug/mL or greater
See report.
Note2

Note1:


Reference Interval 5.0-12.0 ug/mL
See report..

Note2:


Reference Interval 0-2 Months: 15.0-30.0 ug/mL Toxic: 40.1 ug/mL or greater 3 Months and Older: 15.0-40.0 ug/mL Toxic: 50.1 ug/mL or greater
See report..