false-positive
adjective
variants:
or false positive
Medical Definition of false-positive
: relating to or being a test result or an individual that is erroneously classified in a positive category (as of diagnosis) because of imperfect testing methods or procedures
a false-positive pregnancy test … one must bear in mind the cost of needless medical procedures generated by the huge number of false-positive mammograms …— David Plotkin, The Atlantic Monthly, June 1996
— compare false-negative