Finger-prick Home Sample Kit (CE Marked)

(19 customer reviews)


This kit contains all that you need to take a finger-prick blood sample yourself and send this to our laboratory for testing using the most intelligent test on the market:

  • Measures the strength of your vaccine response using this quantitative (S1 protein) test
  • The only test to categorise positive results into low, medium, high and very high
  • The only test to report IgM and IgG levels separately
  • Repeat testing using this test allows you to monitor your COVID-19 antibody levels over time, which are known to decrease at different rates in different people.
  • This test has been validated against a SARS-CoV-2 virus neutralisation test, and antibodies detected by this test can stop virus particles (original / wildtype strain) from entering cells
  • Considerably more sensitive than other antibody tests – the only test that has been validated in mild and asymptomatic cases of COVID-19
  • A test designed and run by experts in immunology.

The Virtus antibody test was developed by Professor Sebastian Johnston and his team at Virtus Respiratory Research Ltd. Professor Johnston has more than 30 years’ experience of researching respiratory virus infections see

How it works

Our COVID-19 home antibody testing service is easy to use. Simply:

  1. Purchase your test online here
  2. You will receive your home sample kit via Royal Mail  (next working day delivery if ordered before 2pm) – free delivery
  3. Take your finger prick sample at home, following the instructions provided
  4. Return your sample using the pre-paid envelope (this can simply go in any post box)
  5. Receive your results by email within 2 days of your sample reaching our laboratory

49 in stock

SKU: VRRV4CE Category:


What’s in the kit? 

  • 1x detailed instruction sheet to tell you how to easily register your kit with us and how to take your sample
  • 2x blood collection tubes (we only need one tube returned with a few drops of blood; the second tube is a spare)
  • 1x pre-injection alcohol wipe
  • 3x lancets to prick your finger (one is usually enough)
  • 1x hard plastic casing to return your sample in
  • 1x biohazard bag
  • 1x plaster
  • 1x pre-paid return envelope

What does my antibody test result mean?

Receiving an overall result of “Positive” from our test confirms that you have either had a prior COVID-19 infection or received a COVID-19 vaccine and you have mounted an immune response against the virus that is detectable by our test. A positive result for either IgM or IgG gives an overall positive result.

An overall result of “Negative” means that any IgM or IgG antibodies to the SARS-CoV-2 S1 spike protein were not detected by our test. This could be because:

  • You have not previously been infected or vaccinated against COVID-19
  • You have been infected or vaccinated, but the antibodies you produced are below the detection limit of our test
  • You have been infected but your immune system has produced antibodies that do not bind to the S1 spike protein in our test

Further test details:

Who is this suitable for?

Anyone who would like to know if they’ve previously had COVID-19 or would like to test their immune response after vaccination.
This is the ‘have you had it’ test. If you currently have symptoms of COVID-19, you should follow government guidelines ( 

What’s the advantage of this test?

Two different antibody types (IgG & IgM) are tested and reported separately 

IgM antibodies are detectable earlier than IgG and can be an indicator of recent infection. Our tests measures both COVID-19 IgG and IgM antibodies and reports separate results for each, giving you more information about the nature of your immune response. Other tests only measure IgG or will report a combined IgG & IgM result.

Our test gives you a quantitative result & categorises your response 

If you have a positive test result, this test will also tell you how strong your immune response to SARS-CoV-2 is, with antibody levels reported as low, medium, high or very high.
This will also be given a numerical value, which gives you a baseline measure so you can check in the future whether your levels have changed over time.

Antibodies that our test detects have been shown to protect against SARS-CoV-2 infection using a neutralising test 

This test has also been validated against a SARS-CoV-2 neutralisation test, which determines whether the antibodies in your blood are able to stop the SARS-CoV-2 virus from entering and infecting cells. The antibody levels measured by our test correlated very strongly with virus neutralising activity, meaning they blocked the virus (original strain) from infecting cells. 

Determines vaccine response 

All current COVID-19 vaccines are designed to produce antibodies to the S1 Spike protein, which our test measures. You can use our test to determine your response to the vaccine and booster and to monitor your antibody levels over time.

How accurate is this test?  

This test has been shown to detect 100% of severe hospitalised cases and 86.9% of 107 milder community cases, including asymptomatic people with a positive SARS-CoV-2 swab test, this is the test sensitivity. Most other antibody tests have not been validated in community cases of COVID-19, nor in asymptomatic people with a positive SARS-CoV-2 swab test.

For high or very high positives, the specificity of our test is 100%. This means for moderate to very high antibody positives, we are almost 100% certain they are not false positives. For moderate level positives, the specificity of our test is 99.5%. This means for moderate antibody positives, one in 200 tests could be a “false positive”. For low-level positives, the specificity of our test is 98.6%. This means for low antibody positive, 1.4 in 100 tests could be a “false positive”.

Note that in Prof Johnston’s view, a “false positive” is probably more likely to be showing cross-reactive protection from prior seasonal coronavirus exposure, rather than being a true “false positive”.

How quickly will I get my results? 

Results will be delivered via email (usually by 6pm) within 2 working days of receipt of samples in VirTus’ laboratory (Camden, London).

Return your samples using the pre-paid envelope, using any Royal Mail post-box. Delivery should be next day, unless Royal Mail is experiencing delays.

Is this an approved test? 

Yes, the home sampling kit and the COVID-19 S1 antibody test is fully CE marked (accredited), meaning that the products we use meet EU safety, health and environmental requirements and are approved for use within the European Economic Area (EEA).

Is a finger prick test as accurate as a test on venous blood? 

Yes. Capillary blood, obtained using our home test kit finger-prick method, has been validated against venous blood showing 100% agreement between the two sampling methods for positivity or negativity in 64 people sampled using the two methods on the same day.

Additional information

Weight 0.1 kg
Dimensions 23 × 15.5 × 23.0 cm

19 reviews for Finger-prick Home Sample Kit (CE Marked)

  1. Michael Smith

    This is an excellent service.
    We each had separate test kits sent out to the Channel Islands and within two days of returning the samples to U.K. our results came back giving us the peace of mind we were hoping for during our present hard lockdown.
    Definitely recommended.

  2. David (verified owner)

    A fantastic service for anyone who is interested in knowing their current Covid-19 antibody status. Results are communicated both as simple gradings (“Negative”, “Positive-Low”, “Positive-Medium”, “Positive-High” or “Positive-Very High”) and as actual numerical values. For users with no technical background, the simple gradings are easy to follow. At the same time, the more technically minded user can (if they so wish) use the numerical values to place their result in full context. Although no telephone number is published on the website, a query that I submitted by email was responded to, fully answering and addressing my query, in less than an hour.

  3. Daniah Hafez

    Really quick and simple testing service! I had me and my family tested because we were sure we had COVID-19 earlier in the year. It was also really useful to know that only some of us had a really strong antibody response. We will be testing again in the winter!

  4. Grace B.

    The antibody test was really easy to use and the instructions were quite clear. Posting our blood samples back was simple as we could just pop it in the post box ?? – thanks!

  5. Johnson P.

    Simple and easy to use!

  6. Megan Y

    I used the test a few days ago and already have the results back! It was so easy to use – the instructions were really clear and simple. I liked how you can just quickly do the test and send it off in a prepaid envelope. I highly recommend this product!

  7. Maryam

    This test was easy to use and very efficient. What I particularly like with this antibody test is that it quantifies your antibody levels and allows monitoring over extended periods of time. I highly recommend this product!

  8. Paul R

    The test is simple and most importantly tells you how high your antibody levels are which was very reassuring after having suffered COVID
    We will be retesting with Virtus after three months as this will let us know whether our antibody levels are staying high

  9. Jill S R

    This is the best anti body test. Very efficient and tells you precisely your levels of antibodies. I will use again in a few months to check

  10. Victoria

    Ordered tests for my family and I and delivery was quick! We had never done a finger prick before but the instructions were quite clear, so not too difficult to do.

  11. Janet

    Quick and easy! (And painless)

  12. Funmi

    Painless, straightforward and rapid service. My family and I were tested as we had recently been showing symptoms, but our results gave us the reassurance we needed. Thank you!

  13. Venetia

    I was really surprised by how quick and easy this service is! I have recommended this to all of my friends and family

  14. Khalid

    Excellent overall experience. The kit arrived next day after my online order. Then I got the result 2 days after despatching the sample. Highly recommended

  15. Elizabeth

    Booked my test kit and got it all sorted in 3 days to get my results. I didn’t want to have to wait for an NHS test and this service was much quicker!

  16. Elizabeth

    Booked my test kit and got it all sorted in 3 days to get my results. I didn’t want to have to wait for an NHS test and this service was much quicker!

  17. Janette

    Easy to use and quick results !

  18. Andrew L. (verified owner)

    Fast service

  19. Anonymous (verified owner)

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