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HelpTest ID BLOD0031 Primidone and Phenobarbital, Serum
Useful For
Assessing compliance
Monitoring for appropriate therapeutic levels of primidone and phenobarbital
Assessing toxicity
Specimen Type
SerumSpecimen Required
Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Instructions:
1. Serum gel tubes should be centrifuged within 2 hours of collection.
2. Red-top tubes should be centrifuged, and the serum aliquoted into a plastic vial within 2 hours of collection.
Reject Due To
| Gross hemolysis | Reject |
Specimen Minimum Volume
0.25 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 7 days | |
| Frozen | 28 days | ||
| Ambient | 72 hours |
Day(s) Performed
Monday through Sunday
Report Available
Same day/1 dayMethod Name
PRIMD: Immunoassay
PBR: Kinetic Interaction of Microparticles in a Solution (KIMS)
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
PRIMD-80188
PBR-80184
Reporting Name
Primidone and Phenobarbital, SReference Values
Primidone
Therapeutic: 5.0-12.0 mcg/mL
Critical value: ≥15.0 mcg/mL
Phenobarbital
Therapeutic: 10.0-40.0 mcg/mL
Critical value: ≥60.0 mcg/mL
Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.Forms
If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:
-Neurology Specialty Testing Client Test Request (T732)
-Therapeutics Test Request (T831)
Profile Information
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| PRIMD | Primidone, S | No | Yes |
| PBR | Phenobarbital, S | Yes | Yes |
Testing Algorithm
Includes phenobarbital determination.
Secondary ID
37053SANFORD INTERFACE BUILD INFORMATION
| Result Code | Result Code Description |
|---|---|
| 3306 | Primidone |
| 16221 | Phenobarbital |