But health experts have warned that it may take 28 days before an immunity test will work and that immunity may not last forever. "The antibody tests are ideally done 28 days after an infection, so in fact the requirement for the antibody test isn't really with us yet. He added: "The test measures your immunity and the peak of your immunity is at 28 days. Professor Newton also explained that scientists did not yet know how immunity would work. He went on to say that there was still work on testing the antibody tests the government has bought, saying: "We've now bought 17.5 million tests, subject to them working.

Source: Daily Mirror April 02, 2020 18:14 UTC