The highest number of tests authorised in a single calendar day was on 4 December 2020, where 17,940 tests were authorised in NHS Wales and non-NHS Wales laboratories.
Y nifer mwyaf o brofion a awdurdodwyd mewn un diwrnod calendr oedd ar 4 Rhagfyr, pan awdurdodwyd 17,940 o brofion yn labordai GIG Cymru a labordai heblaw rhai GIG Cymru.