$25.00
Priced per marker, with baseline labs included. You’ll see your total before you pay.
Brain & nervous system
Aldosterone test
Adrenal hormone regulating sodium, potassium, and blood pressure; high levels may suggest primary aldosteronism.
At a glance
In about 5 days
Most results are ready in about 5 days. Some specialty markers can take up to 21 days.
Check before your draw
This marker has no preparation tag, but it can still need preparation. Contact us before your draw if you’re not sure.
Walk in at Quest
Your lab order arrives by email. Most Quest locations take walk-ins, so bring it with a photo ID.
What it measures
Aldosterone is a hormone from your adrenal glands that tells your kidneys how much salt and water to keep. It helps control your blood pressure and your potassium level.
Why it matters for women
Too much aldosterone can be a common, easily missed cause of high blood pressure. High blood pressure can be a leading driver of heart disease and stroke in women, and it can rise after menopause. Pregnancy can naturally raise aldosterone, so results are read with that in mind.
You might check it if…
- your blood pressure is high and hard to control
- you developed high blood pressure at a young age
- a blood test showed low potassium
What your result may mean
High Aldosterone: what it may mean
High aldosterone may point to primary aldosteronism (Conn's syndrome), when the adrenal glands make too much of this hormone, or to another condition such as heart failure, liver scarring (cirrhosis) or a narrowed kidney artery (renal artery stenosis). It can come with high blood pressure that's hard to control, low potassium, muscle cramps or weakness, and some people may have no symptoms. Pregnancy can raise aldosterone, and so can a low-salt diet, standing before the draw, water pills or spironolactone. Renin, read alongside it, can help sort out why it's high.
Low Aldosterone: what it may mean
Low aldosterone may occur with adrenal insufficiency, when the adrenal glands can't make enough hormones, or with selective hypoaldosteronism, when this one hormone runs short. It can come with high potassium, and dizziness on standing, tiredness or muscle weakness may follow. Blood pressure medicines such as ACE inhibitors or ARBs and a high-salt diet can also lower the result. Diabetes-related kidney disease can play a part too, and renin, potassium and cortisol results can help work out the reason.
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These notes provide context and do not diagnose a condition. Not yet available in NY, NJ, RI, HI, ND, SD or WV.