Measures aldosterone excreted in urine over 24 hours.
Used to confirm primary aldosteronism (excess aldosterone causing high blood pressure and often low potassium), usually after an abnormal aldosterone/renin ratio.
Symptoms suggesting hormonal imbalance — weight change, fatigue, BP changes, growth problems — usually as advised by a doctor.
No fasting needed. Collect all urine for 24 hours in the container provided (discard the first morning urine on day 1, include it on day 2).
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Your doctor may ask you to follow a normal or high-salt diet before collection; sodium is often measured in the same urine.
No fasting is needed. You can eat and drink normally unless your doctor has advised otherwise.
24-hour urine collection in a container provided by the lab (some tests need a preservative).
Usually within 12–13 days after the sample reaches the lab. You will receive the report online.
