Why Get a Urine Aldosterone Test?

This test evaluates adrenal function when symptoms like high blood pressure, low potassium, muscle weakness, or fatigue suggest hormone imbalance. It's especially useful for confirming primary aldosteronism (Conn's syndrome) from tumors or hyperplasia, distinguishing it from kidney or heart issues.

How the Test Works

Collect all urine for 24 hours in a provided container—start after first morning void, end with next day's first urine, and refrigerate. Labs measure total aldosterone output, often paired with blood tests or renin levels for accuracy. Prep may include controlled salt intake.

Interpreting Results

1. High Levels: Suggest excess aldosterone production, causing hypertension and low potassium.

2. Low Levels: Indicate adrenal insufficiency like Addison's disease.
   Normal ranges vary by diet and lab (typically 3-25 mcg/24 hrs), so consult your doctor.