Testing for COVID | East Sussex County Council.
Testing for COVID | East Sussex County Council. Looking for: Why are pcr tests taking so long uk - why are pcr tests taking so long uk - Click here to ENTER The virus genetic material from every positive swab with sufficient virus cycle threshold Ct value less than 30 is sent for whole genome sequencing at Northumbria University, to find out more about the different types of virus and variants of virus circulating in the UK. If a test is positive, the positive result is linked to the date that the swab was taken, not to the date that the swab was analysed in the laboratory. Each swab can have one, two or all three genes detected. This allows conversion of amplification assay raw data from the ABI Fast into test results with minimal manual intervention. We estimate a single Ct value as the arithmetic mean of Ct values for genes detected Spearman correlation greater than 0. More information on how swabs are analysed can be found in the study protocol. The Cycle threshol...
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