Why get tested?
To determine if your aldosterone or renin levels are abnormal; to detect hyperaldosteronism (overproduction of aldosterone) or hypoaldosteronism (underproduction of aldosterone)

When to get tested?
If your doctor identifies an electrolyte imbalance or you develop symptoms of hyperaldosteronism, such as elevated blood pressure or muscle weakness

Sample required?
A blood sample drawn from a vein in your arm or a 24-hour urine sample