Therapeutic drug monitoring.
PROCAINAMIDE: Therapeutic: 4.0 - 10.0 mcg/mL; Critical value: >12.0 mcg/mL.
N-ACETYLPROCAINAMIDE: Therapeutic: 12.0 - 18.0 mcg/mL; Critical value: > or =40.0 mcg/mL.
2 - 3 days
- N-Acetylprocainamide (NAPA)
- NAPA (N-Acetylprocainamide)
- N-ACETYL PROCAINAMIDE
- PROCAINAMIDE LEVEL
- N-ACETYL PROCAINAMIDE LEVEL
- PROCAINAMIDE/NAPA LEVELS
Collect specimen in an SST (preferred) or red top tube. Centrifuge and aliquot serum into a plastic vial within 2 hours of collection and freeze. Draw trough level immediately prior to next oral dose or draw 6-12 hours after start of IV maintenance infusion.
Test includes Procainamide and its primary metabolite N-acetylprocainamide (NAPA). Test sent to Mayo Medical Laboratories.