Serum/plasma mass concentration of aldosterone (measured via mass spectrometry)

Why Is This Test Done?

Your doctor may order this test to check for conditions like primary aldosteroneism (also called Conn’s syndrome), adrenal gland tumors, or other hormonal imbalances that affect blood pressure or kidney function. It may also be used in patients with high blood pressure that doesn’t respond to usual treatments or those with symptoms like unexplained low potassium levels.

What Does a High or Low Level Mean?

High aldosterone levels may suggest conditions like primary aldosteroneism, where the adrenal glands produce too much aldosterone, leading to high blood pressure and low potassium. Low levels could indicate adrenal insufficiency or other issues affecting hormone production.

Sample Preparation and Testing Process

A blood sample is drawn from a vein, usually in your arm. The sample is sent to a lab where it is processed into serum or plasma and analyzed using advanced mass spectrometry to measure aldosterone concentration.

Common Conditions Monitored or Diagnosed

This test helps diagnose or monitor conditions such as hypertension (high blood pressure) resistant to treatment, hyperaldosteronism, adrenal adenomas, or other endocrine disorders. It may also be used to evaluate patients with symptoms like frequent urination, excessive thirst, or unexplained fatigue.