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    Coronavirus Antibody Blood Test

    • Description

      Our test is currently unavailable whilst we work with the MHRA to review the end to end process. For further information and to keep up to date please visit our coronavirus information page here.


      A CE marked laboratory test for IgG antibodies to the SARS-CoV-2 virus to show whether you have been infected with coronavirus in the past. Do not take this test if you think you currently have COVID-19 or want to diagnose a current COVID-19 infection. It is not yet known whether a positive result means that you are immune to coronavirus or, if you are immune, how long that immunity will last.

      Please note: This test has to be posted in a Royal Mail priority postbox and NOT returned via a post office or a standard post box.

    • Key Information

      • Finger-prick blood sample
      • 1 biomarker tested
      • 3 working days' turnaround

    Have you experienced symptoms which you think were caused by COVID-19 but would like to make sure?

    Have you had a positive PCR test for COVID-19 and would like to know whether you have developed antibodies?

    Or do you wonder whether you have been exposed to the virus even though you haven’t had symptoms?

    This test must be taken at least 21 days after the onset of symptoms or 28 days after contact with an infected person. It can help you understand whether you have developed antibodies to the SARS-CoV-2 virus, which causes COVID-19.


    This test looks for immunoglobulin G (IgG) antibodies to SARS-CoV-2, the virus that causes COVID-19. Your body produces antibodies as part of its immune response to an infection. These antibodies normally become measurable from 7 – 14 days post-infection and can indicate whether you were previously infected with the virus.

    A positive result means that you have detectable levels of IgG antibodies in your blood. We do not yet know whether this means that you are immune to coronavirus or, if you are immune, how long that immunity will last.

    Do not take this test if you are currently experiencing symptoms of COVID-19. Please contact 111 for guidance on what to do and to discuss testing options for a current infection.

    NHS staff who are eligible can obtain a discount on this test through Blue Light Card. No other discount codes or offers can be used on this test.

    Test performance

    This serology blood test has been developed by a global medical devices and healthcare company. It is a laboratory test using chemiluminescent microparticle immunoassay (CMIA) technology. It is CE-marked which means that it conforms with European standards for the design and manufacture of such tests. The manufacturer states that in its validation study the test detected antibodies in 100% of confirmed coronavirus cases when the sample was taken at least 14 days after symptoms first developed. The test produced a negative result in 99.6% of samples from people who did not have the infection in the same study.  


    The manufacturer’s validation study was conducted on venous blood samples taken from a vein in the arm. Our laboratory has conducted validation using a combination of venous and finger-prick blood samples. In the laboratory’s study, the test had a sensitivity of 98.5% which means that if 1,000 people who had previously been infected with coronavirus virus took the test, 15 of them would be told that they hadn’t had coronavirus when they had (a false negative result). It had a specificity of 99.5% which means that if 1,000 people who hadn’t had the virus took the test, 5 of them would be told they had been infected when they hadn’t (a false positive result).

    We advise taking the test 21 days after the onset of symptoms. This is because our laboratory has reported a slight increase in the chances of finding detectable antibodies in samples taken between 17 and 21 days after the onset of symptoms.

    This test may not accurately detect antibodies in people who have compromised immune systems because their antibody response may be slower or weakened. This may affect the reported results above. These people may have immunodeficiency diseases, infections such as HIV, or be taking medications that suppress the immune system.

    The test has not yet been evaluated on people who are infected with other viruses in the coronavirus family, so it is not yet known whether these could cause a false positive result. 


    A negative result does not exclude a current infection particularly in those who have recently been exposed to SARS-CoV-2, or in those who currently have symptoms of COVID-19, because antibodies to the virus may not have reached detectable levels at this point.


    Your anonymised data may be used to help UK agencies and other organisations understand the prevalence of coronavirus within the UK population.

    This test is not for sale to, or to be used by, anyone under the age of 18.

    The guidance for the turnaround time of results from this test is 3 working days from the time your sample is received at the laboratory. This excludes weekends and bank holidays. It is an estimate only and your results may take longer during busy periods.​


    This test must be taken at least 21 days after you first developed symptoms of COVID-19. If you have not had any symptoms then it should be taken at least 28 days after your last exposure to the virus.

    Trusted team

    We’re a medically-led company with a team of qualified doctors and pathology experts. Our coronavirus antibody test is manufactured by a leading global laboratory test manufacturer and your sample will be analysed at a UKAS-accredited laboratory in the UK.


    Your personal
    health centre

    View your coronavirus antibody test results on our secure online portal at Your results will display either as positive or negative, and will come with interpretation from a doctor and guidance on what to do next.

    Questions? Let us help

    Get in touch with our customer support team on 03450 600 600 or email.