Vitamin & Mineral Tests for Tiredness and Fatigue
Because your health matters.
If you often feel tired or low on energy, our Vitamin and Nutrient Profiles tests can provide valuable insights. These tests assess key vitamins and minerals that are essential for energy, blood health, immunity and overall wellbeing.
Deficiencies in nutrients such as vitamin D, B12, folate, iron, magnesium, or zinc can contribute to fatigue. Understanding your nutrient status can help you identify these underlying causes and take targeted steps to improve your energy levels and optimise your health.
Our Core Vitamins or Advanced Nutrients and Vitamins Profile tests are a quick, easy and accurate way to explore the nutritional factors affecting your energy.
Explore our packages and book online today.
USPs
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Fast, accurate results
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Competitively priced testing within 20 minutes of your home
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Detailed, personalised Results Report
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Access to our 24/7 GP service with all test packages
How it works
1. Select and book your package
View our health test packages and book a full body private health check. All our individual tests can be added to any of our private health check packages. . Just call our team on 0800 652 2183 before your appointment to add an extra test.
2. Make an appointment
Choose the venue, date and time that suits you. With over 2000 appointments available nationwide every week, you're sure to find a convenient time, date and venue.
3. Attend your appointment
A trained health assessment specialists will carry out your blood test. The whole process only takes around 20 - 30 minutes.
4. Fast, accurate results
Your results will be available 24/7 through our online dashboard, My Wellness. You will receive an email notification as soon as your results are ready for viewing. Processing times vary by test, with some results accessible on the dashboard in as little as three days. The online dashboard also provides easy access to a downloadable PDF, making it simple to share your results with your GP.
Always feeling fatigued and tired?
Tiredness is a normal part of life but when this tiredness and fatigue persists, it becomes a cause for concern. If there are no immediate reasons as to why you may be feeling more tired than usual, there may be an underlying condition causing a long-term lack of energy.
To give you peace of mind, blood tests for extreme fatigue can help rule out health conditions such as diabetes or thyroid dysfunction that can impact energy levels. Often, we experience a dip in our energy levels when our bodies become deficient in a vital vitamin or mineral. A Vitamin & Mineral Test can help to pinpoint any deficiencies in our diet, from iron to B vitamins and more.
What causes tiredness and fatigue?
We all experience periods of low energy at certain points in our lives, which are understandable when we have disrupted sleep or changes to our daily routines. Sometimes, there is no obvious explanation for long-term lack of energy. Here are a few common lifestyle causes of tiredness and fatigue to consider:
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Poor quality of sleep
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Unhealthy diet
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Lack of physical activity
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Stress
If you feel that your tiredness and fatigue are not due to any of these lifestyle factors, then a health issue or deficiency could be to blame. Medical reasons as to why you might be feeling tired all the time include:
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B vitamin deficiency
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Anaemia
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Vitamin D deficiency
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Thyroid dysfunction
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Diabetes
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Menopause and hormonal changes
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Insomnia
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Depression
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ME (myalgic encephalomyelitis)
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CFS (chronic fatigue syndrome)
Vitamin and mineral deficiencies are a common cause of tiredness and fatigue that can be easily remedied. Should your Core Vitamins or Advanced Nutrients and Vitamins Profile tests reveal a vitamin or mineral deficiency, dietary changes can be made to increase your specific micronutrients intake. Supplements can also be taken to ensure that you receive an optimum level of a range of vitamins and minerals.
Diabetes and issues with thyroid function can also be detected through taking blood tests for fatigue. High blood sugar levels can disrupt the body’s ability to use sugar for energy, resulting in feelings of fatigue amongst diabetes sufferers. Thyroid disorders can cause tiredness due to the way it affects the metabolism. Ruling out these health conditions by taking a Core Vitamins or Advanced Nutrients and Vitamins Profile test can give you peace of mind.
What blood tests are done for tiredness and fatigue?
To understand why you may be feeling tired or low on energy, our Vitamin & Mineral Tests check for key nutrient deficiencies that can impact your wellbeing.
The Core Vitamin Profile test includes:
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Vitamin D – supports bone health and immune function
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Folate (Vitamin B9) – important for blood cell formation and energy metabolism
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Vitamin B12 – essential for nerve health and red blood cell production
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Iron stores (Ferritin) – necessary for carrying oxygen in the blood and preventing anaemia
The Advanced Nutrients and Vitamins test includes all Core nutrients plus:
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Magnesium – supports muscle function, hormone balance, and metabolism
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Zinc – important for brain function, immunity, and overall wellbeing
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Active Vitamin B12 (Holotranscobalamin) – gives a deeper view of B12 status
Why these nutrients matter:
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Vitamin B12 and folate are crucial for nervous system health and energy production. Low levels can contribute to fatigue and difficulty concentrating.
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Iron is essential for haemoglobin production, which carries oxygen to your cells. Low iron can reduce oxygen delivery around the body, leading to tiredness and lack of energy.
These tests give a clear picture of nutrient-related causes of fatigue, helping you take targeted steps to optimise your energy and overall health.
What are the benefits of a tiredness and fatigue blood test?
Feeling tired all the time can affect every aspect of your life. Our Vitamin & Mineral Tests help identify nutrient deficiencies that may be contributing to low energy, giving you the information to take targeted steps to improve your wellbeing.
The benefits of taking a Tiredness and Fatigue Vitamin & Mineral Test include:
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A clear starting point to explore causes of tiredness and low energy
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Detecting iron deficiencies that could lead to anaemia
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Identifying vitamin B12 and folate (B9) deficiencies that affect energy and nervous system health
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Revealing vitamin D deficiencies, which support energy, immunity, and bone health
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Providing guidance on whether dietary or lifestyle changes could help boost energy levels
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Offering a personalised report to better understand your nutrient status and take proactive steps to optimise health
Private Health Checks for complete peace of mind
Our full body health checks checks are designed for busy people who want to take control of their health. Our tests are quick, accurate, convenient and completely stress-free. No waiting for an appointment, safe clinical procedures, no embarrassing questions, no long travel times and no busy waiting rooms.
Trained healthcare professionals carry out all tests in over 350 venues across the UK and Ireland, so you get accurate professional health checks within 20 minutes of your home. Our private health checks include all the tests you need to take a proactive approach to monitoring and improving your health.
FAQs
Vitamin & Mineral Tests work by assessing key nutrients in your blood that can affect energy, immunity, and overall wellbeing. A trained health assessment specialist takes a small blood sample and asks a few questions about your health and lifestyle. The process is quick and typically takes around 20-25 minutes.
Your results are presented with colour flags: green, amber, or red. Green results are within the recommended range for your age and sex; amber results are slightly outside the expected range; red results are further outside the norm.
For any amber or red results, we provide follow-up guidance. This could include lifestyle adjustments, monitoring, or consulting your doctor for further advice. If any critical issues are detected by the laboratory, we will contact you immediately.
Yes. These tests are a reliable way to uncover nutrient deficiencies that may contribute to low energy. All samples are analysed by UKAS-accredited laboratories in the UK to ensure precision and accuracy.
Yes, individual nutrient tests such as iron stores (ferritin), vitamin B9 (folate), vitamin B12, vitamin D, zinc and magnesium are available as individual private blood tests through Bluecrest Wellness if you prefer to focus on specific markers. These can be added to your appointment or booked through the team, or you can choose the Core Vitamins or Advanced Nutrients and Vitamin Profiles as a more comprehensive option that includes multiple nutrients in one package.
No fasting is required. You can eat and drink normally before your appointment. Full preparation instructions will be provided in writing when you book your test.
You don’t need to fast, and you can continue your normal diet and hydration. Detailed preparation instructions are provided when you book your appointment.
Your blood sample is analysed by one of our leading UK laboratories. Your results are compiled into a personalised Results Report, which explains your nutrient levels and what they mean for your health.
