PCR Amplification Factor (CT)

William Thomson made this Freedom of Information request to Public Health England

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Response to this request is long overdue. By law, under all circumstances, Public Health England should have responded by now (details). You can complain by requesting an internal review.

Dear Public Health England,

Could I please be informed of the PCR amplification factor currently being used to decide positive and negative results in Covid

Yours faithfully,

Mr William Thomson

Amanda Johnstone left an annotation ()

Dear William

I look forward to hearing PHE's response.

In the meantime, while you wait with baited breath, this was Public Health Wales response back in November:


BTW, do you realise that you have submitted this FOI three times over two days?

Kind regards


William Thomson left an annotation ()


No I didn’t know I had submitted three times.

I received the same info I received from the Welsh Health. I was asking for similar from PHE which is much harder to get.