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Primidone and Phenobarbital
Test CodeMYSO
Quest Code
751
Alias/See Also
751X
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.
Reference Range
Primidone | 5.0-12.0 mg/L |
Phenobarbital | 15.0-40.0 mg/L |
Performing Laboratory
Quest Diagnostics Chantilly Nichols Institute
14225 Newbrook Dr.
Chantilly, VA 20151-2228