Blood sample collection options

You can choose your preferred collection method when you checkout

Finger prick kit (FREE)

You can do this test at home without the need for a doctor. We'll send you everything you need to collect your sample and post it back to us. And it's all included in the cost. We've put together a video that covers the process, making it easy to check and track your health from home.

Home nurse appointment (+£45) was £60

We'll arrange for a medical professional to visit your home and collect your sample. This is great if you're unsure on how it all works or have trouble collecting a sample. No need to book a doctor's appointment or visit a clinic, we'll send you everything you need to collect a sample and post it back to our labs.

Visit a partner clinic (+£45)

Once you've ordered your test, look out for an email from our phlebotomy partners containing information and a link to book your appointment. We'll send you everything the clinic will need to complete the sample and post it back to our labs.

Organise a nurse myself (FREE)

If none of the above options work for you, you can arrange your own medical professional to collect your sample. There is no additional charge for this. Once you've ordered your test, we'll send you everything you and your chosen medical professional will need to collect a sample and post it back to our labs.

Still unsure how it works? You can find more information on collection methods and the service we provide in our 'How it Works' section.

What gets tested?

14 Biomarkers

Additional biomarkers can be added by personalising this test.

What are biomarkers?

Biomarkers are specific compounds we can detect in your blood sample that reflect different things about your health. Your test will tell you your levels for each of the above biomarkers, and whether they are in a normal range.

About flexible subscriptions

How does a subscription work?

When you purchase this test subscription plan, we will automatically send you another test kit in a few months. Don't worry - you have full control over when this will be, and you can change/cancel it anytime.

When you first purchase this test, you can choose your subscription options in the checkout. We do this, because we recommend taking multiple tests over time to track how your biomarkers change. You'll be charged per test kit (rather than monthly, for example).

Why subscribe to multiple tests?

One test will show you what areas you need to focus on, continued testing will help you learn how your training, diet and lifestyle is impacting your health.

How often should I test?

We recommend a follow up test 3 months after your first test, followed by a test every 6 months depending on your results, but its up to you!

Can I change what's tested in future tests?

Yes, you can tailor/customise subsequent tests (via your app) to focus on just the areas that need improving.

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Forth home blood test kit with purple and yellow tube
Nutricheck blood test - Go beyond reporting basic blood results
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Nutricheck blood test - Personalised targets
Nutricheck blood test - Focus Where It Counts
Nutricheck blood test - Guidance for optimal health
Analysed by
NHS Lab
Tracked 24
delivery
Personalised
GP advice
Finger prick or venous collection

Nutricheck - Vitamin Deficiency Test

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Results in 2 working days

14 Biomarkers

Identify key nutrient gaps with Nutricheck, the ultimate at-home vitamin deficiency test. This comprehensive nutrition blood test checks 14 vital biomarkers, including active B12, vitamin D, ferritin, and magnesium.

Analysed by
NHS Lab
Tracked 24
delivery
Finger prick or venous collection

£109

Klarna

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What gets tested?

14 Biomarkers

Blood sample collection options

WHEN TO TAKE THE TEST?

Collect your blood sample within 3 hours of waking and before food.

1 Million+

results delivered

As seen in

As seen in
51% of people have poor nutrition - 2025 nutrition health data from Forth

Why check for vitamin and mineral deficiencies?

Vitamins and minerals form the foundation of good health, influencing everything from your immune system and energy levels to hormones and heart health. Yet, many people remain unaware of hidden deficiencies affecting their well-being. Nutricheck is a comprehensive at-home vitamin deficiency test designed to help you take control of your health by identifying key nutrient gaps.

We looked at over 10,000 results from Forth customers in January 2025 and found some shocking statistics:

  • Vitamin B12 supports nerve function, red blood cell production, and energy levels. Low levels can lead to fatigue, memory issues, and mood disturbances. Our data shows over a third (35.1%) of women and almost a quarter (24.7%) of men had B12 levels in the “improvable” range.
  • Ferritin, the protein that stores iron, is crucial for oxygen transport and energy. Deficiency can cause fatigue, weakness, and compromised immunity. Alarmingly, 65.6% of women and 41% of men had suboptimal ferritin levels.
  • Vitamin D plays a key role in bone health, immune support, and mood regulation. Deficiencies are linked to fatigue, bone pain, and increased susceptibility to infections. Our research revealed that 62% of women and 40% of men had Vitamin D levels in the “improvable” range.

By identifying these deficiencies early, you can make informed changes to your diet, supplements, and lifestyle. Nutricheck empowers you to take charge of your nutritional health from the comfort of your home.

What this Nutricheck – Vitamin Deficiency Test measures

14 Biomarkers

Active B12

Active B12 measures forms of B12 which are available for direct use by the body. This vital vitamin helps to boost energy, improve mood, and enhances cognitive function. It can mainly be found in fish, dairy products and meat such as beef, which is why vegetarian and vegans are more prone to deficiency.

Vitamin D (25 OH)

Vitamin D is essential for healthy bones, immune function, muscle performance, energy, mood and reducing inflammation. It's primarily produced through sunlight exposure and only small amounts can be consumed through diet.

Corrected Calcium

Calcium is the most abundant and one of the most important minerals in the body. Calcium is vital for cell signalling, and the proper functioning of muscles, nerves, and the heart. Foods best for boosting calcium include; dairy products, leafy green vegetables, nuts and legumes.

Magnesium

Magnesium is a vital trace element essential for maintaining strong bones, regulating blood pressure, facilitating muscle contraction, and producing energy. Since the primary source of magnesium is through diet, testing your magnesium levels can identify deficiencies and help you make necessary dietary adjustments for optimal health.

Ferritin

A ferritin test measures the total level of iron stored in your body. Iron is crucial for energy production, immune function, cognitive health and muscle performance. Including iron-rich foods such as red meat, dark leafy vegetables and whole grains in your diet is essential for maintaining healthy levels.

Full Blood Count

3

A Full Blood Count (FBC) test measures various components of blood. In this test it includes red and white blood cell count together with haemoglobin. These tests helps identify conditions like anaemia, a common cause of fatigue, where the blood lacks enough healthy red blood cells to carry adequate oxygen to the body's tissues.

  • Red Blood Cell (RBC)
  • White Blood Cell Count
  • Haemoglobin

Haemoglobin A1c (HbA1c)

HbA1c provides an average reading of blood sugar levels over a period of 2-3 months. It is considered one of the best indicators of pre-diabetes. Healthy HbA1c levels can be maintained by managing carbohydrate intake, increasing fiber, balancing protein and healthy fats, limiting sugar and moderating alcohol consumption.

Cholesterol (lipid panel)

5

A cholesterol or lipid panel test measures various cholesterol components to assess cardiovascular disease risk. Too much saturated fats in your diet raises LDL cholesterol levels increasing the risk of heart disease and stroke.

  • Total Cholesterol
  • LDL
  • HDL
  • HDL:Cholesterol Ratio
  • Triglycerides

How our Nutricheck – Vitamin Deficiency Test works

Getting the insights you need to improve your health has never been easier.

How it works - collect your sample

Collect your blood sample

It takes just a few minutes to collect a small blood sample from your fingertip using the Nutricheck kit. Simply use the Tracked-24 envelope provided to securely send your sample to our labs for analysis.

How it works - view your results

View your results

Receive your results within 2 working days of your sample reaching our lab. Access them in our mobile app, where you’ll find key insights into your vitamin and nutrient levels, an optional doctor’s comment, and a detailed, easy-to-understand report.

How it works - make improvements

Make improvements

Your personalised report highlights specific deficiencies and offers tailored recommendations to help you optimise your diet, boost energy, and support overall well-being.

Is a hidden vitamin deficiency holding you back? Nutricheck reveals what your body really needs.

51% of Forth customers have a nutrition health score below the optimal range. Get answers and take control of your health with Nutricheck and HealthCoach.

Unlock your health scores

Nutritional Health Score - 43/100

Unlock your nutrition health scores and get insights into your health and wellbeing.

Personalised health targets

LDL

High
High result range

4.78 (mmol/l)

Next target 1 - 3 (mmol/l)

Get incremental, achievable targets to aim for, based on your unique vitamin and mineral results.

Focus where it counts

25

100

Ferritin

NEEDS ATTENTION

43

100

Lipids

SOMEWHAT LOW

Nutricheck’s smart algorithms pinpoint the key vitamin and nutrient deficiencies that could be impacting your health and well-being.

Guidance for optimal health

12

100

Vitamin D

NEEDS ATTENTION
Thom Phillips

Although your Vitamin D result is in range, this is slightly below the optimal level for bone, muscle and immune health. Studies show that the best level of Vitamin D for health is between 90-120 nmol/L. We get Vitamin D from our diet and also make it when we’re exposed to sunlight.

Receive personalised advice based on your age, gender, diet, and lifestyle to help you restore balance and achieve optimal health.

Nutricheck – Vitamin Deficiency Test, recommended by our doctors

"A Vitamin Deficiency Blood Test is a powerful tool for optimising health. It identifies deficiencies in essential vitamins like D, B12, and folate, guiding your nutrition and supplementation. Addressing deficiencies can enhance energy levels, immune function, and overall well-being, preventing long-term health complications and promoting vitality."

Dr Thom Phillips

Dr Thom Phillips

Clinical lead

Frequently asked questions

This is what our customers ask us about the most. For more information, try our help centre.

What does this test check?

Our Nutricheck vitamin deficiency blood test checks a wide range of essential vitamins, minerals, and key health markers to give you a complete picture of your nutritional and overall health.

It tests for critical vitamins like Vitamin D (25 OH) and Active B12, both vital for energy, immune support, and bone health. It also checks Magnesium (serum) and Corrected Calcium, which are important for muscle function, nerve health, and bone strength.

In addition to vitamins and minerals, Nutricheck assesses your iron stores with Ferritin levels and measures Haemoglobin and Red Blood Cell (RBC) counts to detect signs of anaemia.

For metabolic health, the test includes HbA1c to monitor blood sugar control, along with a full cholesterol profile—including Total Cholesterol, HDL (good cholesterol), LDL (bad cholesterol), Triglycerides, and HDL Ratio—to give insights into your heart health.
We also evaluate your White Blood Cell (WBC) count to help monitor immune system function.

What causes vitamin deficiencies in men?

Vitamin deficiencies in men can result from poor dietary choices, limited sun exposure (affecting Vitamin D levels), or chronic stress. Lifestyle factors like excessive alcohol consumption or intense physical activity without proper nutrition can also deplete key nutrients.

Medical conditions such as digestive disorders (e.g., Crohn’s disease or celiac disease) can interfere with nutrient absorption. As men age, absorption of vitamins like B12 and minerals like magnesium may decrease, increasing the risk of deficiencies.

Nutricheck helps identify these deficiencies, guiding you toward the right changes to improve your health.

What causes vitamin deficiencies in women?

Vitamin deficiencies in women can stem from dietary gaps, hormonal changes (such as pregnancy, menstruation, or menopause), and lifestyle factors like stress or restrictive diets.

Women are especially prone to iron deficiency due to menstrual blood loss, and deficiencies in Vitamin D and Calcium can become more common post-menopause, affecting bone health. B12 deficiencies may also occur, particularly in women following vegetarian or vegan diets.

With Nutricheck, you can pinpoint exactly which nutrients you’re lacking and take control of your health with personalised recommendations.

What are the symptoms of vitamin deficiency?

Vitamin and mineral deficiencies can cause a range of subtle to severe symptoms. You should consider testing with Nutricheck if you experience any of the following:

  • Low energy or fatigue – Often linked to Vitamin D, B12, or iron (ferritin) deficiencies.
  • Muscle weakness or cramps – Could be a sign of magnesium or calcium deficiency.
  • Frequent colds or infections – A weakened immune system may be related to low Vitamin D or abnormal white blood cell counts.
  • Brain fog or memory issues – Deficiencies in B12 or iron can affect cognitive function.
  • Pale skin or shortness of breath – Signs of anaemia, related to low haemoglobin or ferritin levels.
  • Mood changes or depression – Low Vitamin D and B12 are linked to mood disorders.
  • Numbness or tingling in hands and feet – A potential indicator of B12 deficiency.
  • Brittle nails or hair thinning – May signal iron or calcium deficiencies.

If you’re experiencing any of these symptoms, Nutricheck can help identify whether a deficiency is the root cause.

What can vitamin and mineral deficiencies cause?

Untreated vitamin and mineral deficiencies can lead to serious health problems over time:

  • Vitamin D deficiency can result in weakened bones, an increased risk of fractures, and a compromised immune system.
  • Vitamin B12 deficiency may cause anaemia, nerve damage, memory issues, and cognitive decline.
  • Iron (ferritin) deficiency can lead to anaemia, causing fatigue, dizziness, and shortness of breath.
  • Magnesium deficiency can affect muscle and nerve function, leading to cramps, irregular heart rhythms, and mood disturbances.
  • Low calcium levels can weaken bones, increase the risk of osteoporosis, and affect heart and muscle function.
  • High cholesterol levels or abnormal HbA1c can increase the risk of heart disease and diabetes.

Identifying and addressing these deficiencies early with Nutricheck can help prevent long-term health complications and improve your overall well-being.

Can I share my results with my doctor or nutritionist?

Yes. Once you receive your Nutricheck results in our easy-to-use app, you can download and share them directly with your doctor, nutritionist, or healthcare provider. This makes it simple to discuss your results and create a personalised plan to address any deficiencies or imbalances identified in your test.

What should I do if my results show a deficiency or imbalance?

If your Nutricheck results highlight a deficiency or imbalance, don’t worry, you’re one step closer to taking control of your health. Our app provides personalised insights and guidance on how to improve your nutrient levels through diet and lifestyle changes.

Is there an age requirement for using Nutricheck?

All Forth blood tests, including Nutricheck, are suitable for adults aged 18 or over.

We are dedicated to supporting you on improving your health

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Nutricheck - Vitamin Deficiency Test