Mephobarbital

Test Code

MEPHB

Alias/See Also

Mephobarbital, Serum

Quest Code
900183

CPT Codes
80302

Preferred Specimen

1 mL serum collected in a no additive (red-top) tube, transferred to a plastic screw-cap vial

Minimum Volume

0.5 mL

Transport Temperature

Refrigerated

Specimen Stability

Room temperature: 5 days
Refrigerated: 7 days
Frozen: 30 days

Methodology
Fluorescence Polarization Immunoassay

Setup Schedule

Monday-Saturday a.m.

Report Available

Next day

Clinical Significance

Mephobarbital is n-methylphenobarbital and undergoes hepatic n-demethylation to produce the metabolite phenobarbital. Phenobarbital is an anticonvulsant used for the long-term treatment of generalized tonic-clonic (grand mal) seizures and cortical focal seizures. The concentration is monitored to assure adequate therapeutic levels are achieved and to avoid toxicity.

Performing Laboratory
Quest Diagnostics Nichols Institute
Chantilly, VA

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.