Hi,
there are several reasons for an elevated ca125 including , Fibroids, Endometriosis,pelvic inflammatory disease,normal mentruation , common cold or chest infection and many more.
Best wishes Angie
A higher than normal CA125 can also be caused by endometriosis.
Shari
By abnormal I'm assuming you mean a high reading, doctors watch for a trend they don't just rely on one reading. A scan needs to be done in conjunction with a CA125 test, i've also heard that sinusitis or a virus can elevate a reading.