Covid-19 – How accurate is our test?

This test has been shown to detect 100% of severe hospitalised cases and 86.9% of 107 milder community cases, including asymptomatic people with a positive SARS-CoV-2 swab test, this is the test sensitivity. Most other tests have not been validated in community cases of COVID-19, nor in asymptomatic people with a positive SARS-CoV-2 swab test.

For high or very high positives, the specificity of our test is 100%. This means for moderate to very high antibody positives, we are almost 100% certain they are not false positives. For moderate level positives, the specificity of our test is 99.5%. This means for moderate antibody positives, one in 200 tests could be a false positive. For low level positives, the specificity of our test is 98.6%. This means for low antibody positives, 1.4 in 100 tests could be a false positive.

Note that in Prof Johnston’s view, a “false positive” is probably more likely to be showing cross-reactive protection from prior seasonal coronavirus exposure, than being a true false positive.

Share on facebook
Facebook
Share on twitter
Twitter
Share on pinterest
Pinterest
Share on linkedin
LinkedIn
Share on email
Email

Related Posts

We use cookies in order to give you the best possible experience on our website. By continuing to use this site, you agree to our use of cookies.
Accept
Reject