What does C and T mean on a COVID test?

Whether or not you have had to take a test, if you have at least seen information about COVID tests you will have noticed that most of the lateral flow tests have different letters and markings, most notably the large C and T letters which indicate the outcome of the test.

So what does C and T mean on a COVID test, why were these letters chosen, and what does it mean if your test has a line next to these letters?

Please enter your details and we'll get back to you as soon as we have the new tests in stock.

Please enter your details and we'll get back to you.

"*" indicates required fields

Name*
This field is for validation purposes and should be left unchanged.