Covid-19 Vaccine and Immune Response Home Blood Test

This home test kit is delivered to your preferred address by post, where you can then collect a finger-prick blood sample yourself. You can return the sample to our laboratory using the pre-paid envelope provided with the kit. The lab then sends your test result via email.

Please note that you have to register your test before sending the sample to our lab using the link provided during purchase.

It is recommended that the test be taken at least a week after the initial Covid-19 vaccination or infection for accurate results. Your IgG levels are expected to increase for up to 15 days resulting in 99.4% sensitivity which confirms exposure to the virus.

Your home test kit includes thorough and straightforward instructions on collecting a finger-prick blood sample.

You receive your result within 1-2 days after your sample arrives at our laboratory. As soon as we have a conclusive result confirming how your body has responded either to a Covid-19 vaccination or infection, we send you a certificate with your test result via email.

Currently, it is unknown how long antibodies last after an infection. It is also not known how long IgG levels remain elevated post-vaccination. Although research is still being conducted, it has been observed that individuals’ immune response to Covid-19 infection goes down over 6-9 months.

No. This test only assesses if your immune system has formed IgG antibodies 7-15 days after you have been vaccinated or naturally infected by Covid-19.

You can order our Covid-19 PCR Swab Test to check whether you currently have Covid-19.

Conversely, if you would like to know whether you are currently infectious, you may book our Covid-19 Rapid 15 Minute Antigen Test.

Yes, we offer a discount to NHS staff. Please enquire for details.

• Detailed instructions
• 1 x blood collection tube
• Multiple lancets
• 1 x test request form
• 1 x blood tube holder
• 1 x biohazard plastic bag
• 1 x postage-paid return envelope

The previous IgG and IgM antibody tests determined if your body developed antibodies following a Covid-19 infection.

This new test detects if you have had a Covid-19 infection in the past or if your vaccination has worked. Moreover, you receive a precise quantitative measure of your immune system’s response (levels ranging from 0-80,000 AU/ml).

This test analyses your blood sample for an actual count of your body’s IgG antibodies. An AU/ml of over 50 indicates a positive result, confirming either that your immune system has responded to the vaccine or that you have been previously exposed to Covid-19.

The older tests were unable to measure your body’s Covid-19 vaccine response/immune response, while this new one can do just that.

Furthermore, this new test calculates your IgG antibody levels against the spike receptor-binding domain (RBD) of SARS-CoV-2, unlike the older test, which measured IgG levels against nucleoprotein. The spike protein is associated with the body launching an immune response. It is also the protein that the body’s immunisations imitate to rid the body of the virus – consequently, this test allows us to gauge your body’s immune response to the vaccine.

Please be advised; it is still unclear how one’s immune response correlates with whether one is immune or not. Even with a positive result, it is recommended that you do not conclude that you are immune to Covid-19. Although exhaustive research is being undertaken, there still is not sufficient data available to indicate whether high levels of IgG antibodies make you immune or not.