Guidance: Coronavirus (COVID-19): testing data methodology

Department Of Health

August 12
18:09 2020


The Department of Health and Social Care publishes daily statistics on coronavirus testing.

These statistics cover:

  • testing for coronavirus (COVID-19) tests and positive cases
  • capacity to process tests which is published weekly

This document sets out information on the data sources and methodology used to generate each of these measures.

Published 2 June 2020
Last updated 12 August 2020 +show all updates
  1. Changes have been made to reflect a historic adjustment of 1,308,071 tests being removed from the 'tests made available' metric.

  2. Updated to include the latest methodology on how positive cases are counted in Wales and Northern Ireland.

  3. Updates have been made throughout the methodology note, including adding new sections to 'methodology' and 'positive cases'.

  4. First published.

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