positive

Definition of positive test result
National Cancer Institute

positive test result

(PAH-zih-tiv ... reh-ZULT)
A test result that shows that a person has the disease, condition, or biomarker for which the test is being done. In genetics, a positive test result usually means that a person has a mutation (change) in the gene, chromosome, or protein that is being tested. More testing may be needed to make a diagnosis or to make sure a positive test result is correct.

Source: NCI Dictionary of Cancer Terms