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A test to measure the levels of potassium in the blood.

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About this test

Potassium is essential in regulating how the heart beats. It also helps in the transfer of nutrients into cells and of waste products out of cells and it influences the communication between nerves and muscles. Because potassium is not stable in postal samples, this test must be carried out at the laboratory.

How it works

Collect Sample

We send you an easy-to-use kit to collect your blood sample.

Post Sample

Post your sample to our lab in the prepaid envelope provided.

View Results

View results securely in your own personal dashboard.

Important Information

Our tests are not a substitute for seeing your doctor, especially if you are suffering symptoms. Our doctors will interpret your results based on the information you have provided, but will not diagnose, consult or provide any treatment. You will be advised to see your doctor for any necessary follow-up action.

Tests Included

Kidney Function

Potassium is essential in regulating how the heart beats. It also helps move nutrients into cells and waste products out of cells and influences how nerves and muscles communicate. 

Raised potassium can be caused by over-supplementation but is also a sign of kidney failure as the kidneys fail to remove excess potassium from the blood.

Low potassium can be caused by dehydration, excessive sweating, diarrhoea and eating disorders such as anorexia and bulimia.

Laboratory appointment in London

Your Blood sample will be analysed at our chosen laboratory based in the heart of London's medical district. You can be assured of fast, accurate results from the UK's largest independent provider of clinical diagnostic tests

Private laboratory analysis

Your blood sample will be analysed at one of our chosen laboratories. You can be assured of fast, accurate results from one of our accredited independent providers of clinical diagnostic tests.

Interpretation of results

Our medical team will comment on out-of-range blood test results and give you follow-up advice where necessary. If you need it, a PDF copy of your Potassium test results can be downloaded for your doctor.

Secure online account with

Once you have placed your order you will receive login details to where you can manage your account, track your orders and view your Potassium test results.

Health and Lifestyle tracker

Stay motivated by filling in your online health and lifestyle questionnaire and seeing how improvements in your lifestyle can influence your test results. Your medical and family history gives us vital information when interpreting your results.

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