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Primidone and Phenobarbital
Test Code751
CPT Codes
80184, 80188
Preferred Specimen
1 mL serum collected in a red-top tube (no gel)
Patient Preparation
Collect as trough just prior to next dose
Minimum Volume
0.2 mL
Other Acceptable Specimens
Plasma collected in: Sodium heparin (green-top) tube, lithium heparin (green-top) tube, or EDTA (lavender-top) tube
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 72 hours
Refrigerated: 14 days
Frozen: 30 days
Refrigerated: 14 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Serum separator tube (SST) • Any serum collection tube with additives
Methodology
Immunoassay (IA)
Setup Schedule
A.M. Sets up 6 days a week.
