The 2 tests used most often to screen for ovarian cancer are transvaginal ultrasound (TVUS) and the CA-125 blood test. ... This test can be useful as atumor marker to help guide treatment in women known to have ovarian cancer, because a high level often goes down if treatment is working.
Women should discuss the need for these exams with their doctor. The Pap test is effective in early detection of cervical cancer, but it isn't a test for ovarian cancer. Rarely, ovarian cancers are found through Pap tests, but usually they are at an advanced stage.