You asked
How many amplification cycles are currently used in UK RT-PCR testing? If this number has been subject to change over time since the start of the corona virus pandemic, please also provide the historical values (along with the dates they pertain to).
We said
Thank you for your request.
Public Health England (PHE) are responsible for PCR testing so would be better placed to assist with your query. They can be contacted via email at wn_coronavirus@phe.gov.uk.
We run the COVID-19 Infection Survey, which estimates the number of people testing positive for COVID-19 in the community, with or without symptoms. Please see Ct analysis conducted by our academic partners here.