Anew blood test has been developed to screen for disease z. researchers establish 50 units as a cut point above which a test is considered positive and thereby indicative of disease. the test manufacturers determine that the test’s sensitivity is unacceptably low. however, the manufacturers are concerned with the specificity and do want to diagnose disease z more precisely. how can they improve the specificity of the test? they cannot improve this test and should begin work developing a new test. test each person's blood twice. lower the cut point below 50 units. raise the cut point above 50 units.