The highest number of tests authorised in a single calendar day was on 16 December 2020, where 21,117 tests were authorised in NHS Wales and non-NHS Wales laboratories.
Y nifer mwyaf o brofion a awdurdodwyd mewn un diwrnod calendr oedd ar 16 Rhagfyr, pan awdurdodwyd 21,117 o brofion yn labordai GIG Cymru a labordai heblaw rhai GIG Cymru.