The test might incorrectly be positive in 1 in 500 people who have not had COVID-19 (a false positive result).The test might miss someone who has previously had the virus in 1 out of 200 people (a false negative result). Studies by the manufacturer have found that this test has a 99.5% sensitivity and a 99.8% specificity. However, we do not know the vaccination status or infection history of those we are measuring. There are several trials ongoing that we hope will provide a range of antibody values post-vaccination and their relationship to immunity, but this information is not currently available.Īs you can see the results are spread across the measurable range and above. Beyond this, there is currently not enough evidence to relate antibody levels to a level of immune response or immunity from COVID-19. a positive test, is associated with protection from a severe form of COVID-19. The presence of any detectable antibody i.e. We see values across this range and above. The range of positive values that can be measured by our vaccine immunity test is from 0.8 U/mL to 25,000 U/mL (U stands for units). The difference in antibody levels between individuals is not currently well understood. Understanding your vaccine immunity test result In a small number of cases, it may not always be possible to provide a result, please see our terms and conditions for details. Please collect and post your sample to us Monday-Thursday, to avoid delays over the weekend. Important: these tests are available for people aged over 18 only. There is currently not enough data to indicate whether or not a higher number of antibodies indicates a stronger immune response or a greater level of immunity. The COVID-19 vaccine immunity test will also provide a numerical value that indicates the amount of antibodies. A positive antibody result indicates that you have produced antibodies in response to the vaccine or past COVID-19 infection. All currently available vaccines use the spike protein to produce an immune response. This test will not provide you with a numerical value.ĬOVID-19 Vaccine Immunity Test: This test looks for COVID-19 spike protein antibodies in a blood sample. A positive antibody result indicates that you have had the COVID-19 virus in the past. Antibodies are made by the body in response to the virus. This test bundle combines our two COVID-19 antibody tests:ĬOVID-19 Antibody Test: This test looks for COVID-19 antibodies in a blood sample. ROYAL MAIL TRACKED 24 SAMPLE RETURN INCLUDED
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