FAST, ACCURATE AND TRUSTED RESULTS
Good nutrition supports every aspect of your health, from energy and concentration to immunity and recovery. When your diet lacks certain nutrients, it can lead to fatigue, poor sleep, or slow metabolism. A nutrition blood test helps you understand what your body needs to perform at its best.
At One Day Tests, our nutrition blood tests provide clear insights into your vitamin, mineral, and metabolic balance. You can choose to test at home with a simple finger-prick kit or visit one of our nationwide clinics for a professional blood draw. Results are ready in as little as 24 to 48 hours and reviewed by our laboratory for accuracy.
WHAT IS A NUTRITION BLOOD TEST
A nutrition blood test measures key biomarkers that reflect how well your body absorbs and uses nutrients from your diet. These markers help identify deficiencies or imbalances that may affect energy levels, mood, immunity, and long-term health.
Common nutrients and indicators checked include:
- Vitamin D for bone health and immune support
- Vitamin B12 and folate for energy and red blood cell production
- Iron and ferritin for oxygen transport and stamina
- Cholesterol and blood sugar for heart and metabolic health
- Magnesium and electrolytes for muscle and nerve function
Testing gives you a complete picture of your nutritional wellbeing and helps you make informed changes to your diet or supplements.
ULTIMATE PERFORMANCE TESTThis is the true Best Seller of our range. An ultimate screen for continuous monitoring or as a baseline. Covers everything you need for a full body MOT. |
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£190.00
£180.00
SAVE 5%
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ULTIMATE LONGEVITY TESTThe largest and most complex test we do. One test to rule them all that covers everything you need. |
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£290.00
+ CLINIC FEE
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VITAMIN D (25-OH) TESTVitamin D is a fat-soluble vitamin essential for maintaining bone health, regulating calcium and phosphorus levels in the body, and supporting immune function. |
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£37.00
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LIVER FUNCTION TESTMeasure the range of liver enzymes, proteins, and bilirubin to give you a comprehensive view of how well your liver is functioning. |
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£45.00
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CHOLESTEROL TESTThis is an ideal test for monitoring your cardiac state by measuring your 'bad' (i.e. LDL) and your 'good' (i.e. HDL) cholesterol levels - as well as the all-important total cholesterol/HDL ratio: which is essential for accurately assessing your cardio risks. |
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£37.00
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FULL BLOOD COUNT (FBC/CBC) TESTThe first step in identifying potential health issues and monitoring and diagnosing disease. Abnormal FBC results can be indicators of anaemia, infections or blood disorders. |
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£65.00
£55.00
SAVE 15%
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DIABETES (HBA1C) TESTTake this test to check for diabetes and for early problems in processing blood sugar known as prediabetes or impaired fasting glucose. |
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£43.00
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CORTISOL TESTTake this test to monitor the level of Cortisol in your blood for stress and weight monitoring. |
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£43.00
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ULTIMATE IRON TESTGet a full picture of your iron status and check for signs of iron deficiency, iron overload, and measure if your iron levels are in the normal range. Includes CRP. |
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£59.00
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FASTING INSULIN TESTMeasure insulin and keep track of what is happening with the levels of insulin for diabetes prevention and management. |
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£55.00
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ULTIMATE OMEGA 3 AND 6 FATTY ACIDS TESTThis test measures all the fatty acids in the blood, reporting levels of Omega-3 Index, various ratios, and the Trans Fat Index. |
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£115.00
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TIRED ALL THE TIME TESTTiredness is a very common complaint. Often it is a result of busy and stressful lifestyles, but it may be a symptom of a number of medical conditions. |
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£99.00
£85.00
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FERRITIN TESTA blood test to measure your levels of ferritin, a blood protein responsible for storing iron in the body. An ideal test if you are experiencing symptoms such as lack of energy. |
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£39.00
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APOLIPOPROTEIN B (APO B) TESTThis tests the level of Apo B in your blood - with high levels are associated with an increased risk of cardiovascular disease and LDL (commonly known as the "bad" cholesterol). |
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£48.00
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ADVANCED DIABETES TESTThis is our advanced test to give you a complete picture for your blood sugar levels - fasting glucose together with HbA1c. |
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£63.00
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VITAMIN B12 TESTThis test is used to diagnose vitamin B12 deficiency, which can lead to symptoms such as fatigue, weakness, neurological problems, and megaloblastic anemia. |
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£69.00
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ULTIMATE ALLERGY SCREENING (ALEX 2.0) TESTThis is truly the best way to start your allergy diagnosis and treatment journey. A full allergy MOT for the body. |
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£390.00
£349.00
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FOLATE - FOLIC ACID - VITAMIN B9 TESTThis test measures the total level of folic acid (Vitamin B9) in your blood. Folate (B9) breaks down homocysteine in order to create other chemicals your body needs. |
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£45.00
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MAGNESIUM TESTMeasure the levels of magnesium in your blood that can help detect conditions such as preeclampsia, or conditions affecting kidney or intestine function. |
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£49.00
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FEMALE WEIGHT MANAGEMENT TESTTake this test to assess potential causes related to weight gain such as diabetes, cortisol and testosterone levels and thyroid, liver and kidney function. |
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£125.00
£99.00
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URIC ACID TESTA uric acid blood test can help diagnose conditions such as gout, kidney stones, or certain types of kidney disease. |
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£49.00
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HEALTHY LIFESTYLE TESTGain insights into your organ function, nutrition, heart health, and diabetes risk so you can make informed lifestyle choices. |
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£89.00
£71.00
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LIPOPROTEIN (A) TESTMeasure the levels of lipoprotein (a) in the blood. Elevated levels in the blood have been associated with an increased risk of cardiovascular disease, including coronary artery disease and stroke. |
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£42.00
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NEW YEAR RESOLUTION TESTFancy a change? A baseline reading of your state of health so that you can then monitor the progress you make with your new lifestyle. |
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£68.00
£60.00
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CYSTATIN C TESTThis tests the level of Cystatin C in your blood |
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£155.00
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APOLIPOPROTEIN A1 (APO A1) TESTThis tests the level of Apo A1 in your blood - with high levels are associated with a reduced risk of cardiovascular disease and HDL (commonly known as the "good" cholesterol). |
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£48.00
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MALE WEIGHT MANAGEMENT TESTTrying to lose weight can be a frustrating process. This panel, developed in-house by our Clinical Governance team will help you manage weight. |
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£125.00
£99.00
SAVE 20%
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WHY TAKE A NUTRITION BLOOD TEST
Even with a balanced diet, it can be difficult to know if your body is getting everything it needs. Stress, poor sleep, illness, or restrictive diets can all affect nutrient absorption. Testing helps you detect issues early and take steps to improve overall wellbeing.
You may benefit from a nutrition blood test if you:
- Feel tired or low in energy
- Have noticed changes in skin, hair, or nails
- Experience low mood or poor concentration
- Are following a vegan, vegetarian, or specific diet
- Are recovering from illness or training regularly
Understanding your nutrient levels can guide smarter lifestyle choices and support long-term vitality.
WHAT TESTS ARE INCLUDED IN THIS CATEGORY
The nutrition blood test collection includes a range of tests designed to assess vitamins, minerals, and key metabolic markers. These tests provide a detailed overview of how diet and lifestyle are influencing your health.
Our current range includes:
These tests cover the essential nutrients and metabolic indicators that impact energy, performance, and long-term wellbeing.
HOW OUR NUTRITION BLOOD TESTS WORK
Testing your nutrition with One Day Tests is simple and flexible. You can choose to order a home kit or visit one of our clinics.
1. Select Your Test
Select the nutrition blood test that matches your goals or symptoms.
2. Provide Your Sample
Collect a finger-prick sample at home or book a venous blood draw in clinic.
3. Get Your Results the same or next day
Get your results online within 24 to 48 hours, reviewed by the laboratory for accuracy.
All tests are processed by accredited UK laboratories, ensuring clinically valid results that you can trust.
UNDERSTANDING YOUR RESULTS AND NEXT STEPS
Your results show how your nutrient levels compare to the optimal ranges. If any levels are outside the expected range, it may suggest deficiencies or lifestyle factors affecting absorption.
If your results show low levels of vitamins, iron, or other nutrients, you can share them with your GP, dietitian, or nutritionist to discuss next steps. In some cases, simple dietary changes or supplements can make a significant difference to how you feel.
Regular testing helps track progress and measure how lifestyle changes are improving your overall health.
FREQUENTLY ASKED QUESTIONS
What blood test checks nutrition?
A nutrition blood test checks levels of vitamins, minerals, and other essential nutrients in your body. It can include markers such as vitamin D, iron, ferritin, B12, and folate to assess overall nutritional balance.
What are 10 signs of poor nutrition?
Common signs of poor nutrition include fatigue, weakness, brittle nails, dry skin, hair loss, poor concentration, frequent illness, pale skin, low mood, and slow recovery after exercise. Testing helps identify deficiencies that may cause these symptoms.
What blood test does a nutritionist do?
A nutritionist may recommend blood tests that measure vitamin D, iron, ferritin, B12, folate, and cholesterol levels. These markers provide insight into how diet and lifestyle are affecting your health and energy.
What is included in a nutrition test?
A nutrition test typically includes checks for vitamins (D, B12, folate), minerals (iron, magnesium), and markers of metabolic health such as cholesterol and blood sugar. These results help guide dietary and supplement recommendations.