Aldosterone (blood)

This is an important test to check the cause of abnormal blood pressure and potassium levels.

Venous blood
1 tests included
5 days turnaround



About Aldosterone (blood)

What is aldosterone?

Aldosterone is a steroid hormone produced by the adrenal glands. It is an important mineralocorticoid which affects blood pressure and regulates the level of sodium and potassium in the blood.

Hormones are chemical messengers used by the body to respond to internal and external influences. The activity of hormones must be finely regulated to produce the desired physiological effect. This regulation is typically coordinated by complex interactions between several different hormones. Both excessive production and a deficiency in the production of steroid hormones can cause ill health. 

Excess levels of mineralocorticoids may cause sodium retention, swelling, and high blood pressure, whereas low levels may result in low blood pressure and high potassium. Disorders related to abnormal levels of mineralocorticoids include hyperaldosteronism and hypoaldosteronism.

Why take the test?

This test measures the level of aldosterone in the blood. It is typically used to determine the cause of abnormal blood pressure and potassium levels. In combination with testing for associated enzyme rennin, it can be used to diagnose adrenal gland tumours.

What's tested


How it works



Purchase your Kit

Just order a test online and get your kit delivered right to your door unless you are ordering a COVID-19 Fit to Fly test where you will be given appointment options to attend our clinics across the United Kingdom for a nose and throat swab PCR test at the checkout stage.



Take your test and post

Follow our simple instructions to take your sample and post back the enclosed prepaid envelope to our accredited lab for processing. We also offer home or workplace visits by a qualified nurse. For COVID-19 Fit to Fly tests you must attend one of our partner clinics for our trained collection officers to take your sample. You will then have the results emailed to you.



Get results directly to your dashboard

You will receive an email notification from our medical team when your results are available on your secure personalised health dashboard.