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fatigue blood test

Find out why you're tired with our fatigue blood tests

Are you feeling tired and exhausted? We provide blood tests for fatigue to help you discover why you might be lacking energy. Extreme exhaustion may be caused by hormonal imbalance or nutritional deficiencies, such as a lack of Vitamin D or a lack of iron.

What's included in this blood tests for tiredness?

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Here we check your haemoglobin to make sure your blood is able to carry sufficient oxygen around the body. We’ll also check your white cell count to make sure you don't have an infection which can cause extreme fatigue.

Full blood count

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B12 and folate (also called folic acid) are important for your cells to function properly. They're also important in creating your red blood cells and they help repair DNA. B12 is also responsible for your nervous system to work as it should. Iron helps form haemoglobin in your red blood cells and carries oxygen around your body.

B12, folic acid and iron

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This important vitamin is usually produced by the skin when it's exposed to sunlight. Vitamin D is important for maintaining healthy bones and an effective immune system.

Vitamin D

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Here we test thyroxine and cortisol which are produced from your adrenal glands. Both are important hormones that control how well your body works. They also help your heart and muscles work more effectively.

Thyroid function

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Calcium and phosphate are important in keeping your bones and teeth healthy.

Calcium and phosphate

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A HBA1c and a blood glucose test is a check for diabetes. Diabetes is usually caused by a lack of insulin or the insulin you produce is not working as it should. This leads to a high blood sugar level which can cause damage to your organs like the kidney and the heart.

HbA1c and blood glucose

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This is a measure of your kidney function. If your kidneys don't work as they should they can cause extreme exhaustion because the body's waste cannot be removed.

Urea and electrolytes

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The liver is an important organ that removes toxins from your body. It's also important for producing blood proteins and helps the immune system.

Liver function

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Fatigue blood test price

The cost of a private fatigue blood test at our clinic is £159.

Fatigue blood test results

You’ll receive a doctor reviewed report showing the normal levels and whether your results are within this normal range. You’ll also receive personalised recommendations on how to stay healthy.

Dr Ravi Gowda

Dr Ravi Gowda, Consultant physician or one of his highly trained clinical colleagues will be looking after you.

Who will be providing your fatigue test?
Book appointment online

1. Book an appointment online

Book and pay for your health check consultation online.

Attend appointment

2. Attend your appointment 

Fast for 8 hours before your appointment and visit the clinic for your blood test.

Receive results

3. Get your blood test results

View your results on our secure online portal in 1-3 working days.

How it works
We're a team of trained experts

Experts in Infectious Diseases, General and Travel Medicine

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Over 21 years of experience in Travel Health

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Cared for more than

10,000  patients

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Over 150 5 star reviews on Google Reviews

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Frequently asked questions
  • As you will only be attending for the blood test, it will be quick, just 10 - 15 minutes.

  • If you’re not so good with blood tests, it’s worth bringing some water to drink afterwards just in case. You can also make sure you are well hydrated before coming for your test (it should only be water). If it’s a cool day bring plenty of warm clothing as this makes it easier for our team to take the blood test.

  • No, this is a fasting blood test which means that you shouldn't eat or drink anything except water for 8 hours before the test. So, we recommend booking an early morning appointment for your fatigue blood tests.

  • Our blood results usually take 1 - 3 working days and you can access them online from our secure portal.

  • Any results outside the normal range are reviewed by our doctors and shared with you through our secure online portal. We’ll ask you to contact your GP for further assessment but if it’s urgent then we’ll call you, so please make sure you give us a contact number when you book your appointment.


Dr Ravi Gowda, Consultant in Infectious Diseases and Travel Medicine


Caitlin Lancaster, BSc