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Primidone (Mysoline) & Metabolite (Phenobarbital)

Mnemonic:    [MYSOLINE]
Name:    Primidone (Mysoline) & Metabolite (Phenobarbital)
Specimen:    1 mL serum from a Red top tube or plasma from a Green top tube. Do NOT use gel barrier tubes. Do NOT use gel tubes.

Allow specimen to clot completely at room temperature. Separate serum from cells ASAP.
Minimum Spec:    0.8 mL
Transport Temp:    Refrigerated
Spec Stability:    Stable 7 days refrigerated.
Ref Lab/Code:    ARUP 0090202
  Method:    Fluorescence Polarization Immunoassay (FPIA)
Note:    Includes a phenobarbital determination. Do not order a separate phenobarbital level.

For suspected toxicity, collect specimen anytime.

For routine monitoring, specimen should be collected prior to the next dose.