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The Daily Insight

What is a normal range for aldosterone?

Author

Emma Johnson

Updated on February 28, 2026

Reference ranges: Plasma aldosterone, supine position and normal sodium diet: 2-9 ng/dl (55 – 250 pmol/L) Plasma aldosterone, upright position (standing / seated for at least 2 hr) and normal sodium diet: 2 – 5x supine value. Urine aldosterone: 5 – 20 μmg/24 hr (14 – 56 nmol/24 hr)

How are aldosterone levels measured?

Aldosterone (ALD) may be measured in blood or urine. During a blood test, a health care professional will take a blood sample from a vein in your arm, using a small needle. After the needle is inserted, a small amount of blood will be collected into a test tube or vial.

What is high aldosterone level?

The high aldosterone level increases reabsorption of sodium (salt) and loss of potassium by the kidneys, often resulting in an electrolyte imbalance. Signs and symptoms include high blood pressure, headache, and muscle weakness, especially if potassium levels are very low.

What is low aldosterone level?

Low aldosterone (hypoaldosteronism) usually occurs as part of adrenal insufficiency. It causes dehydration, low blood pressure, a low blood sodium level, and a high potassium level.

What is a low aldosterone renin ratio?

A cutoff for the cortisol-corrected aldosterone ratio from high-side to low-side of more than 4 : 1 is used to indicate unilateral aldosterone excess; a ratio less than 3 : 1 is suggestive of bilateral aldosterone hypersecretion.

What blood tests detect aldosterone?

Saline infusion test. This blood test measures your aldosterone, renin, and other levels after you receive an IV sodium and saline solution.

What does low renin and aldosterone mean?

High or low levels may help explain why you have high blood pressure: High renin with normal aldosterone may show that you’re sensitive to salt. Low renin and high aldosterone may mean your adrenal glands aren’t working the way they should. If both are high, it can be a sign that there’s a problem with your kidneys.

What is hyperaldosteronism?

Hyperaldosteronism is a disorder in which the adrenal gland releases too much of the hormone aldosterone into the blood. Hyperaldosteronism can be primary or secondary.

What is a positive aldosterone renin ratio?

However, in clinical practice the test is considered positive when its value exceeds a given cutoff, commonly placed between 20 and 40 (in [ng/dL]/[ng/mL per hour] for plasma aldosterone concentration [PAC] and plasma renin activity [PRA]).

What is the normal range for aldosterone levels?

Plasma aldosterone, supine position and normal sodium diet: 2-9 ng/dl (55 – 250 pmol/L) Plasma aldosterone, upright position (standing / seated for at least 2 hr) and normal sodium diet: 2 – 5x supine value. Urine aldosterone: 5 – 20 μmg/24 hr (14 – 56 nmol/24 hr)

What is a normal aldosterone to renin ratio?

The ARR compares the amount of aldosterone to that of renin, and the resulting number – a ratio – is then compared with a “cutoff” value currently set at 30 (or 750 when measurements are expressed in SI units). Below this value, the result is considered normal. Above this value, primary aldosteronism is suspected.

How do you know if you have primary aldosteronism?

In those who have primary aldosteronism, aldosterone is high while renin is low — renin is said to be “suppressed.” The higher the ARR result, the more likely a person has primary aldosteronism.

What is the normal range of plasma renin activity?

Plasma Aldosterone Concentration (PAC) 7 ng/dL. 30 ng/dL. On average for adults, the range of the Plasma Renin Activity runs between 0.7 and 3.3 ng/mL/hr (or 0.7 and 3.3 mcg/L/hr in SI units), and the range of the Plasma Aldosterone Concentration (PAC) goes from 7 to 30 ng/dL (or 190 to 830 pmol/L in SI units).