Electrolytes
Blood Test

£39

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check_circle3 tests included
schedule1 day turnaround   info
invert_colors Blood - finger-prick or venous    info

Key benefits

1

Accurate tests
from accredited laboratories

2

Easy-to-use
test kits you can do at home

3

Confidential results
provided securely online

4

Qualified doctors
will interpret your results

Electrolytes blood test

About this test

Electrolytes are positively and negatively charged molecules called ions, that are found within the body's cells and extracellular fluids, including blood plasma.

Electrolytes are important because they are what your cells (especially nerve, heart, muscle) use to maintain voltages across their cell membranes and to carry electrical impulses (nerve impulses, muscle contractions) across themselves and to other cells.

Your kidneys work to keep the electrolyte concentrations in your blood constant despite changes in your body.

Typically, tests for electrolytes measure levels of sodium, potassium, chloride, and bicarbonate in the body.

Sodium is both an electrolyte and mineral. It helps regulate the water (inside and outside the body's cells) and electrolyte balance of the body. Sodium is also important in how nerves and muscles work.

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

Chloride, like sodium, helps maintain a balance of fluids in the body.

Bicarbonate prevents the body's tissues from getting too much or too little acid. The kidney and lungs balance the levels of bicarbonate in the body.

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

Electrolytes

Sodium is both an electrolyte and a mineral. It helps regulate the water and electrolyte balance of the body and is important in the operation of nerves and muscles. Sodium levels in the blood are regulated by the kidneys. 

Excess sodium in the blood is often due to dehydration but can also indicate that the kidneys are not working properly. 

Too little sodium is often caused by fluid retention (oedema) or reflects loss due to vomiting, diarrhoea or excessive sweating. 

Chloride, like sodium, helps to maintain the balance of fluid in the body.

Raised levels can caused by eating too much salt, dehydration, diarrhoea, certain medications and also kidney disease. 

Low levels can be caused by a condition that causes the ph of the blood to be raised, chronic vomiting and over-hydration.

Bicarbonate prevents your body's tissues from getting too much or too little acid. Your kidneys and lungs balance the level of bicarbonate in your body. Bicarbonate is looked at in conjunction wtih the other electrolytes in your blood; sodium, potassium and chloride. Levels can be affected by severe vomiting and diarrhoea.

Raised levels of bicarbonate may indicate kidney disease, liver disease or other metabolic conditions. 

Low levels of bicarbonate may indicate lung disease, Cushing's syndrome or Conn's syndrome.

Finger-prick blood sample collection kit

We will send you your Electrolytes blood test finger-prick blood sample collection kit which contains everything you need to take your blood sample in the comfort of your own home. If you are unsure about completing a finger-prick blood sample collection you will have the opportunity to select a clinic-based venous blood sample collection or choose to go our London laboratory during the checkout process.

How to collect a finger-prick blood sample

Postage & packaging

Your Electrolytes blood test includes 1st class postage and packaging for you to send your blood sample directly to our laboratory for analysis. If you live in an area where you cannot rely on the post or you simply want to ensure that your sample arrives at the laboratory the following day, you may wish to send your blood sample guaranteed next day delivery for extra reassurance.

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 results and give you follow-up advice where necessary. If you need it, a PDF copy of your Electrolytes blood test results can be downloaded for your doctor.

Secure online account with mymedichecks.com

Once you have placed your order you will receive login details to mymedichecks.com where you can manage your account, track your orders and view your Electrolytes blood 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 results. Your medical and family history gives us vital information when interpreting your results.

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