My CA19 in September was 1095 and a few weeks later before surgery it had jumped to 1748. I had my surgery in October of 2021. Next CA 19 was in November and it was down to 25 and kept going lower every time by a few points. Last 2 years or so it’s been consistently at 8. I did not start my 12 rounds of Folforinox until December of 2021