Hi,
My experience has been that my CA19-9 numbers have gone up and down, most recently up to 1400 from 1080. But, before that it was 1600. My doctor said that trends are most important than actual numbers and that no determination can be made solely on the test without an accompanying scan. Two more months of treatment before next scan. Very stubborn disease - been dealing with it for almost a year. For me, diarrhea was a problem with Folferinox, but not with Gemzar Abraxane. Imodium worked very well for me. Best wishes and I hope this is helpful.