Test Background Digoxin is administered for the treatment of heart failure in addition to supraventricular arrhythmias (particularly atrial fibrillation and atrial flutter).
Clinical Indications Therapeutic drug monitoring Suspected toxicity caution: low potassium (diuretics), thyroid disease, renal impairment or recent myocardial infarction. Contraindicated in hypertrophic cardiomyopathy, intermittent heart-block, ventricular tachycardia
Reference Range Normal: 0.5-2.0 μg/L Target range in heart failure: 0.5-1.0 μg/L
Sample Required SST (gold top)
Take blood 6 hours post dose
Sample Volume 0.5 mL
Turnaround Time 1 day