What labs to check when on Digoxin?

When a patient is on digoxin, it is important to monitor serum digoxin levels to ensure they are within the therapeutic range, typically between 0.5 and 2.0 ng/mL. Additionally, electrolyte levels, particularly potassium, magnesium, and calcium, should be checked, as imbalances can increase the risk of digoxin toxicity. Renal function tests, such as serum creatinine, are also crucial, as digoxin is primarily excreted by the kidneys. Regular monitoring helps to prevent adverse effects and ensure effective dosing.