If both tests are positive or only the COVID-19 antibody test is positive then this indicates that you have previously had the COVID-19 virus.

If only the COVID-19 vaccine immunity test is positive then this indicates you have had an immune response to the vaccine.

If both tests are negative, then antibodies were not detected. This can indicate that you have not had a COVID-19 infection in the past or that antibodies have decreased to a level that can no longer be detected.

A positive test result indicates that you have had an immune response to the virus or vaccination. Unfortunately, a positive result does not mean that you are immune to the virus. It cannot tell you whether or not you can become ill with COVID-19 again. Nor can it tell you whether or not you can spread the virus to others. You should continue to follow all government guidance and restrictions.

No, this test does not tell you if you have a current COVID-19 infection. This test can only tell you if you have had COVID-19 in the past or an immune response to a COVID-19 vaccine.

If you have symptoms of COVID-19 that started less than eight days ago, then a PCR test can tell you if you have COVID-19.

Yes, the COVID-19 vaccine immunity test measures SARS-CoV-2 S antibodies (spike protein antibodies). These antibodies can be made in response to any of the vaccines currently in use. A positive result can also occur from previous exposure to the virus that causes COVID-19.

Whether or not you have had a COVID-19 vaccine, the COVID-19 antibody test can tell you if you have had the COVID-19 virus in the past. The COVID-19 antibody test measures SARS-CoV-2 N antibodies (nucleocapsid antibodies). These antibodies will not be made in response to any vaccines currently in use.

COVID-19 Antibody Test:

We use the Roche Anti-SARS-CoV-2 test.

Studies by the manufacturer have found that this test has a 99.5% sensitivity and a 99.8% specificity.

This means that:

• The test might miss someone who has previously had the virus in 1 out of 200 people (a false negative result).
• The test might incorrectly be positive in 1 in 500 people who have not had COVID-19 (a false positive result).

The test has been separately validated by Public Health England. We have performed our own verification to ensure that the test is fit-for-purpose and works with our home testing kits.

COVID-19 Vaccine Immunity Test:

We use the Roche Anti-SARS-CoV-2 S test

Studies by the manufacturer have found that this test has a 98.8% sensitivity and a 99.98% specificity.

This means that:

• The test might miss someone who has previously had the virus in approximately 1 out of 100 people (a false negative result).
• The test might incorrectly be positive in 1 in 5000 people who have not had a vaccine or the COVID-19 virus (a false positive result).

We have performed our own verification to ensure that the test is fit-for-purpose and works with our home testing kits.

These tests measure a sample of your blood to look for two different types of antibodies to SARS-CoV-2, the virus that causes COVID-19. The body responds to the virus or vaccine by making antibodies. These antibodies are used by your immune system to help fight infection. Peak antibody levels are typically seen 4-6 weeks after vaccination or infection.

The COVID-19 antibody test measures SARS-CoV-2 N antibodies (nucleocapsid antibodies, including IgG antibodies). These antibodies will not be made in response to any vaccines currently in use. A positive result indicates exposure to the virus that causes COVID-19.

The COVID-19 vaccine immunity test measures antibodies to SARS-CoV-2 spike protein (including IgG antibodies). The spike protein is produced by the virus that causes COVID-19. The spike protein is also used by all currently available vaccines to generate an immune response. A positive result can indicate an immune response to any of the vaccines currently in use. A positive result can also occur from previous exposure to the virus that causes COVID-19.

No, the majority of international travel restrictions require you to take a COVID-19 PCR test prior to travel. This is to indicate that you do not have a current COVID-19 infection. A COVID-19 antibody test cannot be used for this purpose.

We do not issue certificates of results for either the COVID-19 Antibody Test or the COVID-19 Vaccine Immunity Test. Results will be available to view via our website.

Some countries may waive quarantine restrictions for passengers with a positive COVID-19 antibody test. These tests must usually be conducted in a laboratory accredited by the country’s government. For this reason, our COVID-19 Antibody Test and Vaccine Immunity Test cannot be used for this purpose.