Results in 2 working days
8 Biomarkers
Worried about a weak immune system? If you often feel tired, get sick frequently, or struggle to recover from illnesses, your immune system may need support. Our Immune System Blood Test checks key health markers, including white blood cell count, inflammation levels (hs-CRP), and essential nutrients like vitamin D and B12. These markers help identify potential deficiencies or imbalances affecting your immunity. Your sample is analysed by an accredited NHS laboratory in the UK, providing clear results and expert insights to strengthen your immune system and improve your overall well-being.
£98
3 Interest-free payments Learn more
What gets tested?
8 Biomarkers
Blood sample collection options
As seen in
Getting the insights you need to improve your health has never been easier.
Taking a small finger-prick blood sample at home is quick and easy. Use the included Tracked-24 envelope to send it securely to our lab for analysis.
You’ll receive a detailed report with your personalised health score and insights into your immune system health, including doctor-reviewed comments.
Your results highlight areas needing attention, helping you make targeted lifestyle and nutritional changes to support a stronger immune system.
A weak immune system can leave you vulnerable to frequent colds, infections, and slow recovery times. But how do you know if your immune system is functioning properly? Our immune system blood test can identify key imbalances, helping you take action before illness strikes.
We looked at thousands of blood test results in February 2025 and our data shows that many people have low Vitamin B12 and ferritin levels, both essential for a strong immune response.
Around 33% of women and 21% of men have suboptimal B12 levels, which can lead to fatigue, brain fog, and weakened immunity.
Ferritin data revealed almost two-thirds of women (63.7%) and 42% of men had levels outside the “healthy” range. Consistently low ferritin (iron) levels can lead to poor energy levels and frequent illness, making it an important area for improvement.
A simple immune system blood test allows you to check for these key markers, helping you identify deficiencies and track your immune health over time. By understanding what your body needs, you can take targeted steps through diet, supplements, or lifestyle changes to strengthen your immune system and stay healthier for longer.
Unlock your immune health scores with the immune system blood test. Get detailed insights, goals and tips on how to improve your immunity and long-term health.
Translates biomarker results into health scores, giving you better insight into your immune health and wellbeing.
ALT
Healthy
8 (IU/L)
Next target 10 - 14 (IU/L)
Get incremental, achievable targets based on your unique results, ensuring progress at every step
20
100
Liver Proteins
NEEDS ATTENTION
There are a number of causes of low albumin including both medical and lifestyle factors. The most common cause is linked to nutrition, particularly a lack of protein in the diet. Other causes include liver and kidney function changes, smoking, reduced muscle mass and low physical activity and exercise.
Get tailored advice which considers your gender, age, hormone treatments and menstrual cycle to help you reach optimal health
"Our immune health blood test offers valuable insights into your immune system function. By measuring key markers like white blood cell count, antibody levels, and inflammatory markers, it helps assess your overall immune health. This information can aid in early detection of infections, autoimmune disorders, or immune deficiencies."
Dr Thom Phillips
Clinical lead
Our team of specialist doctors, dieticians and biomedical scientists are here to help you be in the best of health.
This is what our customers ask us about the most. For more information, try our help centre.
Can I check my immune system at home?
Yes, you can check your immune system at home with our fingerprick blood test kit or you can have a trained nurse visit your home to collect the blood for you.
You can choose your collection method once you add the test to your basket.
How accurate is the immune health test?
Our immune system blood test is conducted in accredited UK labs that meet the highest clinical standards. Each biomarker is tested using state-of-the-art technology, ensuring high accuracy and reliability. Results are reviewed by medical professionals, giving you a clear and precise assessment of your immune health.
What does this test check?
This test measures key biomarkers that indicate how well your immune system is functioning. It includes:
What causes low immune health?
A weak immune system can be influenced by several lifestyle, dietary, and medical factors. Some of the most common causes include:
Can I fix a weak immune system?
Yes! Many factors affecting immunity can be improved with lifestyle changes. Addressing nutrient deficiencies, improving sleep, reducing stress, and eating a balanced diet can strengthen your immune system. This test provides insights to help you make targeted changes and track progress over time.
How can this test help me?
A blood test to check your immune system helps you understand if you have key nutrient deficiencies, inflammation, or an underlying issue affecting your immunity. By identifying areas for improvement, you can take proactive steps to support your immune health, reduce illness frequency, and improve overall well-being.
You’ll get goals tailored to your specific needs to help you set a wellness journey that suits you.
When will I get my results?
You’ll receive your immune system blood test results within 2 working days after your sample reaches our lab. Your report includes detailed biomarker analysis, an optional doctor’s comment, and easy-to-understand insights into your immune health.
How soon will the test arrive?
Once you place your order, your test kit will be dispatched the same day (if ordered before 3 pm on weekdays) via Royal Mail Tracked-24, meaning you should receive it within 1-2 days.
What is a health score?
Your health score is a personalised rating based on your test results. Scores range from 0 (poor) to 100 (excellent). It helps you understand how well your immune system is functioning and highlights any areas that may need improvement. Tracking your health score over time allows you to monitor progress and make informed health decisions.
Health sores are included at no extra cost and can be viewed in our app.
How often should I check my immune health?
We recommend taking an immune system blood test every 6 months to monitor changes and track improvements in your immune health. Regular testing allows you to see if nutrient levels, inflammation markers, and immune function are improving based on any lifestyle or dietary changes you make.
If you have a weakened immune system, frequent infections, or underlying health conditions, more frequent testing (every 3-6 months) may be beneficial. This helps you stay on top of deficiencies, inflammation, and overall immune performance so you can take proactive steps to strengthen your defences.
Is your packaging discreet?
Yes, all of our test kits are sent in plain, unbranded packaging for complete privacy. There are no logos or markings that indicate the contents, ensuring a discreet and confidential delivery. Your test results are also stored securely in your online account, accessible only to you.
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