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Methodology: Fluorescence Polarization Immunoassay (FPIA)
Edit Date: 2/16/2010
Components: Procainamide / N-acetylprocainamide (NAPA)
Performed: Daily
Released: 24 hours after setup at PeaceHealth Laboratories’ reference lab
CPT Code: 80192-90
Specimen Collection Details
Collection: One 5 mL red top tube. Do not use a serum separator tube (SST) or plasma separator tube (PST). Also acceptable: One 4 mL green top tube (sodium heparin).
Handling: Allow to clot, centrifuge and immediately separate serum or plasma into a plastic vial. Refrigerate.
Stability: 7 days ambient, 14 days refrigerated, or 6 months frozen.
Standard Volume: 1 mL serum or plasma.
Minimum Volume: 0.5 mL serum or plasma.
Transport: Refrigerated.
Rejection Criteria: EDTA plasma; use of separator tube, gels, or grey top tube (sodium fluoride/potassium oxalate).

Reference Range:
N-acetylprocainamide (NAPA) 6.0-20.0 µg/mL Toxic: ≥ 35.1 µg/mL
Procainamide 4.0-10.0 µg/mL Toxic: ≥ 12.1 µg/mL

PeaceHealth Laboratories