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Aldosterone

Published: July 27, 2026Updated: August 25, 2026

Aldosterone is a hormone produced by the adrenal glands that helps regulate blood pressure by controlling sodium and potassium levels in the body.

Quick summary

Aldosterone measures adrenal gland function and helps diagnose conditions like hyperaldosteronism.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 25, 2026Editorial policy

Key facts at a glance

Units
ng/dL
Clinical utility
diagnostic
Result kind
quantitative
FDA-cleared
Roche Aldosterone, Abbott Aldosterone, Siemens Aldosterone
interpretation: {"text":"May indicate adrenal insufficiency, hypoaldosteronism, or certain medications affecting adrenal function.","label":"Low Levels"}; {"text":"Suggests primary aldosteronism, Conn's syndrome, or other conditions causing aldosterone overproduction.","label":"High Levels"}

Aldosterone is a mineralocorticoid hormone synthesized and secreted by the zona glomerulosa of the adrenal cortex. It plays a crucial role in maintaining blood pressure and electrolyte balance by promoting sodium retention and potassium excretion in the kidneys.

The normal reference range for aldosterone levels in adults is typically between 1–16 ng/dL. Elevated levels can indicate conditions such as primary aldosteronism (Conn's syndrome), while low levels may suggest adrenal insufficiency or hypoaldosteronism.

Measuring aldosterone is essential in the diagnostic workup of hypertension, especially when it is resistant to conventional treatment. It helps differentiate between primary and secondary causes of aldosterone excess or deficiency.

Frequently asked questions

What are the symptoms of high aldosterone levels?
Symptoms may include hypertension, muscle weakness, frequent urination, and headaches.
How is an aldosterone test performed?
An aldosterone test usually involves a blood sample drawn from a vein, often after the patient has been in a specific position (e.g., lying down or standing) for a period.
  1. 1
    Mayo Clinic: Aldosterone TestSource
  2. 2
    Endocrine Society: Primary AldosteronismSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

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Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy