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.

  • Hidden
  • This can be found on the automated email you received at the time of purchasing the test. We just need the 4 numbers.
  • For Fit-to-Fly tests, that is the day you leave the UK; for the other tests, that is the day you arrive in the UK.
    DD slash MM slash YYYY
  • That is the time when you take your ferry, or board your flight or train.
    :
  • For fit-to-fly test, please indicate the country you are flying to. For all other tests, please indicate the country you are travelling from.

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.