Laboratory Test Information Guide

Details for Primidone, Serum

Test Name: Primidone, Serum
Alternate Name(s): Anticonvulsant
Mysoline
Laboratory: Core
Specimen Type: Adult:
6 mL Red top Vacutainer tube

Pediatric:
0-2 years: 2 x 0.5 mL Red top Microtainers
2-10 years: 3 mL Red Vacutainer tube

Blood collection tubes with separator gels are not recommended for this test.
Collection Information: Minimum volume of serum required is 0.5 mL.

To monitor therapy, draw trough specimens before the next dose is administered. The active metabolite phenobarbital should be measured simultaneously.

Grossly hemolyzed or icteric samples should be avoided.
Requisition: GENERAL LABORATORY REQUISITION
Test Schedule: Referred out Monday - Thursday
Turnaround time from when specimen
is received in testing laboratory:
 
Routine
2 days
Stat
N/A
 
Reference Range: Therapeutic: 23.0 – 55.0 µmol/L
Effective Date: 2009-03-10
Revised Date: 2019-05-29
Critical Value: Toxic:>70.0 µmol/L
CRITICAL VALUE to be phoned to Nurse/ Physician immediately
Interpretive Comments: A primidone level should only be considered in combination with the corresponding phenobarbital level, and more attention should be given to the phenobarbital level when a clinical decision is being made.
Special Processing:  
Comments:  
Method of Analysis: Enzyme-Linked Immunosorbent Assay (ELISA)
Critical Information Required:  
Storage & Shipment: Store and ship serum frozen.

Specimen Stability:
Ambient: 2 days
Refrigerated: 14 days
Frozen: 1 month
System Codes: 
Cerner
PRIM
 
Referred To: In-Common Laboratories

Questions? Comments? Contact Laura Gopaul