My mother (45 years old) goes for check-ups every 6 months and gets a ca125 test done, i insisted on this because my grandmother had ovarian cancer (she was in her 50s) but still i just wants her to be on the safe side. For the first 6 months, the ca125 results was 22 ( normal range for the lab is 0-35) and for the next 6 months the result was 21. The first time she had a functional cyst which appeared on the vaginal ultrasound and the second time there was no cyst or anything and the ovaries looked normal. I can see there isnt much of a difference between the results and it is within normal but i'm still worried is 21 fine ? or is it better to be under 10