I have had Pancreases cancer for 6 years and have had my marker all over the place. After eating a shake shake hot dog it raised it from 11 to 30 It has to do with a multitude of factors not just cancer. By the way I do not recommend hot dogs of any kind. I was treated with the Triplett At Virginia Piper Cancer Center in Scottsdale Az.
My last CA-19-9 was 14.7 I get results from blood in less than 2 hours