<s>[INST] i am 69, in 3/12 hs total hysterectomy for ovarian cancer stage 4, no complications now, feel great.  had pelvic exam 10/22 everything was fine, except on 8/13 had a ca125 of 67, now on 10/22 had a ca125 level of 78.  is cancer back.  what can i do to lower this reading. [/INST] Hello! Thank you for the query. Unfortunately cancer recurrence or metastases are possible especially in case of ovarian cancer. Ca125 level is used to monitor possible cancer regrow or metastases and as it gets higher, you should have it checked. The best way to do that is a CT and PET scan. You can not lower Ca125 level, you should better focus on ruling possible cancer out. Hope this will help. Regards. </s>