Primidone and Metabolite Level

Message

Sendout, UCI test code: XPRIM (performed by ARUP)

Test Code

LAB808

Alias/See Also

Primidone and Metabolite
Mysoline
Luminal
Phenobarbital
XPRIM

CPT Codes
80184, 80188, 99001

Includes

Phenobarbital

Preferred Specimen

1 mL serum from a red tube

Minimum Volume

0.8 mL

Other Acceptable Specimens

Dark green (sodium heparin) tube

Instructions

Allow specimen to clot completely at room temperature. Separate serum from cells within 2 hours of collection

Transport Container

Plastic vial

Transport Temperature

Frozen

Specimen Stability

Frozen (preferred): 1 month
Refrigerated: 1 week
Ambient: 1 week

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Separator tubes

Methodology
Immunoassay

FDA Status
Approved

Setup Schedule

Sunday through Saturday

Report Available

Within 24 hours upon receipt at ARUP

Limitations

None

Reference Range

Included with report

Clinical Significance

Primidone concentrations greater than 15 µg/mL in conjunction with therapeutic levels of phenobarbital may be associated with toxicity.

Performing Laboratory
ARUP Laboratories, Salt Lake City, Utah

Additional Information
Primidone and Metabolite

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.