Join Date: Nov 2018
Location: Istanbul, Turkey
Programs: TK Elite Plus,BAEC GGL,ITA Executive, AFKL Gold,QR Gold,HH Diamond,Bonvoy Gold,ALL Gold
Posts: 14,186
The answer is no.
BA wouldn't hand you your boarding passes at Denver if you don't present a negative COVID test.
You wouldn't be able to use the airside testing facility for this occasion.