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Private Fatigue Blood Test

Feeling constantly tired can affect every part of your life, from work to relationships and your overall sense of wellbeing. At Phoenix Hospital Group, our private fatigue blood test helps uncover what might be behind your tiredness –from low iron and thyroid imbalances to hormone deficiencies.

With fast access to expert-led testing in our London and Chelmsford clinics, we’re here to support your health and help you feel more like yourself again.

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What is a fatigue blood test?

If you’re feeling persistently tired without knowing why, a fatigue blood test can offer vital insight.

This comprehensive blood test checks for a range of possible causes, including iron deficiency, thyroid function, vitamin B12 and folate levels, hormone imbalances and more.

At Phoenix Hospital Group, our fatigue blood tests are carried out by experienced nurses at our Harley Street and Chelmsford clinics. Your samples are processed in our on-site medical laboratory, so you can expect accurate results and fast turnaround times.

We’ll explain the findings clearly, so you leave with a better understanding of your health and the next steps to take.

Book your fatigue blood test

Why might I need a fatigue blood test?

Tiredness isn’t always just about lack of sleep – it can be a sign of an underlying health condition.

You might benefit from a private fatigue blood test if you:

Feel unusually tired despite getting enough rest
Struggle with low mood or motivation
Experience brain fog or difficulty concentrating
Have noticed unexplained weight changes
Experience hair thinning or loss
Have skin changes like dry skin
Are recovering from illness or managing a long-term condition
Suspect a nutritional deficiency or hormone imbalance

Our fatigue checks are designed to look for the most common causes of tiredness, giving you the information you need to move towards better energy and wellbeing.

Insights into your health

We analyse the 10 key markers associated with common causes of fatigue to provide valuable insights into your health

Convenient in-house testing

Our dedicated team performs the tests right here in our clinic, ensuring a seamless and hassle-free experience

Expert interpretation

Our in-house doctor will analyse your results, providing a professional interpretation of your blood test findings, providing you with a clear understanding of your health

Why choose Phoenix Hospital Group for your fatigue blood test?

At Phoenix Hospital Group, we combine expert care with advanced diagnostics to give you fast, reliable answers.

Our fatigue blood test checks 10 key markers linked to tiredness, including iron, thyroid hormones, vitamin B12 and more. These insights can help identify underlying issues that may be affecting your energy and wellbeing.

Your test is carried out by our experienced clinical team at our London or Chelmsford clinics and analysed in our on-site lab. This makes the experience smooth, convenient and efficient from start to finish.

Once ready, our in-house doctor will review your results with you, explaining what they mean and offering guidance tailored to your health needs. You’ll leave with a better understanding of your body and the steps you may wish to take next.

What’s included in my fatigue blood test?

Our fatigue blood test panel can identify the most common reasons for tiredness and low energy. It provides a detailed look at your overall health by checking for vitamin and mineral deficiencies, hormone imbalances, inflammation and how well organs such as your thyroid, liver and kidneys are functioning.

Full blood count (FBC) and erythrocyte sedimentation rate (ESR)

This test looks at the number and quality of your red and white blood cells, which may suggest conditions like anaemia or infection. ESR is a marker of inflammation in the body and may point to underlying causes of fatigue, such as chronic inflammation or autoimmune conditions.

Thyroid hormone (TSH, FT3 and FT4) profile

Your thyroid plays a vital role in regulating energy, metabolism and mood. These tests measure thyroid-stimulating hormone (TSH), as well as free T3 and free T4 hormones, to assess whether your thyroid is underactive (hypothyroidism) or overactive (hyperthyroidism), both of which can lead to persistent tiredness.

Iron profile

Iron is essential for making haemoglobin, the part of red blood cells that carries oxygen around your body. It also plays a key role in energy production and keeping your cells healthy. We check your iron levels to ensure you have enough for proper oxygen transport and energy. Low iron can cause tiredness, weakness, shortness of breath and difficulty concentrating.

Ferritin test

Ferritin is a protein that stores iron in your body. Low ferritin levels are a common indicator of iron-deficiency anaemia, which can result in extreme fatigue, shortness of breath and difficulty concentrating.

B vitamins profile

Vitamin B12 and B9 (folate) are essential for red blood cell production and energy metabolism. Deficiencies in these may lead to fatigue, brain fog and mood changes.

Kidney, liver and muscle health (U/E, LFTs, CK and LDH) profile

We check your kidney and liver health by measuring urea and electrolytes (U&E), which are natural substances in your blood. Urea is a waste product from breaking down protein, and electrolytes like sodium and potassium help control fluid balance and nerve function. These levels show how well your kidneys are working. We also perform liver function tests (LFTs) to see how your liver supports energy, removes waste and keeps your body healthy.

In the same panel, we check levels of creatine kinase (CK) and lactate dehydrogenase (LDH), two enzymes that can indicate muscle stress or damage. Raised levels may be linked to inflammation or muscle conditions that contribute to persistent fatigue.

Calcium, phosphate, uric acid and glucose test

These tests assess essential minerals and your blood glucose (blood sugar) levels. Imbalances in calcium and phosphate or unsteady glucose levels can all contribute to low energy, irritability and poor concentration.

Lipid profile

This test measures your cholesterol and triglyceride levels, offering insights into your heart health.

Book your fatigue blood test

If tiredness is affecting your day-to-day life, we’re here to help. Our private fatigue blood test offers a detailed look at the possible medical reasons behind your symptoms, helping you take the next step towards feeling more energised and well.

With fast, in-house testing and expert review from our dedicated doctor, you’ll receive accurate results and clear guidance on what they mean for your health.

To book, call us on 0207 079 2100 or complete the enquiry form below, and a member of our friendly team will be in touch.

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Fatigue blood test frequently asked questions (FAQs)

To help you understand what to expect, we’ve provided some key information about our fatigue blood test and how it can support your health.

What can a fatigue blood test detect?

A fatigue blood test can highlight possible causes of tiredness, such as vitamin and mineral deficiencies, thyroid problems, liver or kidney issues, inflammation, infection or anaemia.

Do I need to fast before my fatigue blood test?

Most of the time, fasting is not required. However, if we’re checking markers like glucose or cholesterol, we may advise you to fast for a short period before your test. Our team will let you know exactly what to do ahead of your appointment.

Will I need further tests after this?

Sometimes this test gives us all the answers we need. If anything needs further investigation, we can arrange follow-up tests or refer you to a specialist.

Is this test suitable if I’m just feeling run-down?

Yes – if you’re feeling low on energy with no obvious cause, this test can provide reassurance or help pinpoint what’s going on.