The CA 125 is controversial, because many people falsely believe that it can detect Ovarian Cancer in an early stage. It is not particularly accurate in that regard, but it is a good gauge as to the treatment progress of an Ovarian Cancer patient.
CA 125 is a protein that is produced in large amounts by Cancer cells. The more CA 125 in a test sample = the more thriving Cancer cells in the patient. Accordingly, a low CA 125 count suggests that the Cancer is regressing.
I wish your mother health & success. I lost my own mother to Ovarian Cancer, and my big sister had it too, but she is a 23-year survivor.
