Aldosterone
An adrenal hormone that regulates sodium retention, potassium excretion, blood volume and blood pressure.
Primary aldosteronism is the most common correctable cause of resistant high blood pressure — and it's massively under-diagnosed. Worth checking in anyone with hypertension that won't respond to treatment, or with unexplained low potassium.
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🩸 Test your Aldosterone
Order directly through Marek Diagnostics — no doctor's visit needed, drawn at any Quest location in the US. Code CAMERON applies 10% off automatically.
Order this test — 10% off → Browse all 102 markers →What Aldosterone is usually tested alongside
On its own, one marker is a data point. These panels include Aldosterone plus the markers that make it interpretable — each names every test, why it is on the list, and loads the whole set into your cart in one click at 10% off.
includes this + 7 more markers — Wired-and-tired, crashing mid-afternoon, salt cravings, dizzy on standing, or you've been told you have 'adrenal fatigue'.
Would you feel it? Symptoms Aldosterone helps explain
People rarely search for a marker — they search for how they feel. These are the complaints where this marker is worth checking, and whether it is a first-line test or a follow-up once the obvious causes are ruled out.
Why your Aldosterone might be wrong
Most abnormal results are interference, not disease. These are the things that measurably move this specific marker — check them before you change anything. Each one says whether the number is wrong and should be repeated, badly timed and should be redrawn, or real with a cause worth explaining.
Aldosterone roughly doubles on standing. Upright and supine reference ranges are completely different numbers.
The draw must record your posture, and the aldosterone-to-renin ratio is the actual screening test.
Spironolactone, ACE inhibitors, ARBs, beta-blockers and diuretics all distort the aldosterone-renin ratio, in different directions.
This test needs planning with a doctor — several drugs must be stopped for weeks beforehand.
Both alter aldosterone substantially. Low potassium suppresses it, which can mask primary aldosteronism.
Correct potassium before testing.
What Aldosterone means in combination
A single marker tells you a little. Combinations tell you the story — these are the named patterns this marker takes part in, and what each one points at.
Primary aldosteronism, the most common curable cause of high blood pressure and one almost nobody screens for. It carries higher cardiovascular and kidney risk than blood-pressure-matched essential hypertension, and it has specific treatment.
Confirm with an aldosterone-to-renin ratio, planned with a doctor — several blood pressure drugs distort it and need stopping first. Correct potassium before testing, because low potassium suppresses aldosterone and can mask the diagnosis.
What to test next
Markers rarely answer alone. These are the ones that put Aldosterone in context — each with its own full breakdown.
Frequently asked questions
Upright 4–31 ng/dL; varies with posture, sodium intake and time of day Ranges vary by laboratory and assay — always compare to the range printed on your own report.
Optimal ranges, root causes and the full correction protocol are available inside Coach Cam's Peptide Academy.
See the full breakdown inside the Academy.
See the full breakdown inside the Academy.
You can order Aldosterone directly through Marek Diagnostics without a doctor's visit — drawn at any Quest Diagnostics location in the US. Code CAMERON applies 10% off automatically.