The highest number of tests authorised in a single calendar day was on 7 January 2021, where 21,293 tests were authorised in NHS Wales and non-NHS Wales laboratories.
Y nifer mwyaf o brofion a awdurdodwyd mewn un diwrnod calendr oedd ar 7 Ionawr 2021, pan awdurdodwyd 21,293 o brofion yn labordai GIG Cymru a labordai heblaw rhai GIG Cymru.