http://www.thegcf.org/pubs/CA125Levels_brochure.pdf
Women who are suspected of having ovarian cancer and women who have been diagnosed with ovarian cancer often receive a blood test to measure their CA 125 level. Often there is confusion and misunderstanding about what this test means in either the diagnosis of ovarian cancer or its impact on the clinical management of ovarian cancer. This booklet will take you through the basics of what you need to know about CA 125 — what it is, what it’s measuring and what the values mean.