confirmatory
US /kənˈfɜ˞ː.mə.tɔːr.i/
UK /kənˈfɜ˞ː.mə.tɔːr.i/
1.
xác nhận
proving or stating that something is correct, especially a medical diagnosis (= judgment about what an illness or problem is) or test result:
:
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Anyone who tests positive with a rapid test must get a confirmatory blood test.