Specimen Requirements


Quinidine (Cardioquin)

Specimen Requirement

Collect red top, heparin or lavender EDTA/1.0 serum or plasma, centrifuge, transfer serum or plasma to a screw top plastic vial, indicate sample type on tube and send.




Room temp: 4 days, Refrigerated: 7 days, Frozen: Not established

Reference Range

Reference ranges are determined by the performing laboratory and will show on the report.


3-4 days Performed Monday-Saturday

Clinical Use

Quinidine is used in the treatment of acute and chronic supraventricular arrhythmias and ectopic rhythm disturbances. Quinidine clearance can be altered by changes in plasma proteins and in renal and/or hepatic dysfunction. Both quinidine and the related isomer quinine possess antimalarial schizonticide activity. Quinidine levels are monitored to assure adequate therapeutic levels are achieved and to avoid toxicity.

Test Code