COVID Antibody Screening Clinics (£36) - Liverpool, Manchester, Telford and London

Antibody tests are used to detect antibodies to the COVID-19 virus to see if you have previously had the virus. The test works by taking a finger blood sample and testing for the presence of antibodies (IgG and IgM) to see if you have developed an immune response to the virus. Antibody tests differ to virus swab (PCR) tests, which test to see if you currently have the virus.

The antibody test takes under two minutes to perform and it only takes a further 20 minutes for the results which you will receive via email.

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How sensitive is the test?

In clinical trials 127 COVID positive patients were tested 7 days after being clinically diagnosed by PCR and CT. Among the 127 clinically confirmed samples, 125 were detected by the test reagents, with a positive detection rate (sensitivity) of 98.43%. Of the 145 clinically negative samples, 144 were detected by the test reagent, and the negative coincidence rate (specificity) was 99.31%.

How will I get my results?

All results are sent via email, you should receive these within 30 minutes however ‘Pop-Up’ clinics may experience a delay in internet connectivity in which case results may be extended to 2 hours.

The clinical team will advise of the wait on the day of testing.

Why is the cost so low compared to other providers?

BioGrad believes that testing should be available to all for a reasonable cost. We pride ourselves on providing high quality healthcare at an affordable price.

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Do I need to isolate if I have a positive IgG result?

No, IgG antibodies develops in most patients within seven to 10 days after symptoms of COVID-19 begin and remains at detectable level for 6-8 weeks after infection. IgG antibodies may offer protection against a secondary infection and may be detected after secondary exposure to the virus after an initial infection. This is nothing to be concerned about, but it demonstrates that the client has been exposed to the virus in the last 6-8 weeks.

Do I need to isolate if I have a positive IgM result?

IgM is usually the first antibody produced by the immune system when a virus attacks. Apositive IgM test indicates that you have been exposed to Covid in the last 5-7 days and that your immune system has started responding to the virus.

When IgM is detected you may still be infected, or you may have recently recovered from a COVID-19 infection. It is recommended you contact book a PCR antigen test and self isolate until you receive the results.

When should I retest?

We do not recommend re-testing once you have obtained a positive result. The soluble, detectable antibody levels will decrease 6-8 weeks after viral exposure but the memory response will be ready to initiate antibody production again if you are re-exposed to the virus. For this reason you may see IgG levels change over time. Clients that obtain a negative result may wish to re-test every 6-8 weeks to remain informed of their antibody status.

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