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Procainamide with Ratio [70075X]
Test Code3782
CPT Codes
80192
Includes
N-Acetylprocainamide (NAPA)
Preferred Specimen
1 mL serum collected in a red-top tube (no gel)
Patient Preparation
Collect as a trough just before next dose.
Minimum Volume
0.2 mL
Other Acceptable Specimens
Plasma collected in: EDTA (lavender-top) tube, or sodium or lithium (green-top) tube
Transport Container
Plastic screw-cap vial
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 4 days
Refrigerated: 7 days
Frozen: Not established
Refrigerated: 7 days
Frozen: Not established
Methodology
Immunoassay (IA)
Setup Schedule
Set up: Mon-Thurs p.m., Fri, Sat evening; Report available: Next day
Reference Range
See Laboratory Report
Clinical Significance
Procainamide is used to treat a variety of atrial and ventricular arrhythmias. Metabolism of procainamide produces an active metabolite, N-Acetylprocainamide (NAPA). The concentration of both procainamide and NAPA levels are monitored to assure adequate therapeutic levels of procainamide are achieved and to avoid toxicity.
Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153