Hello all, I was having bowel problems at the start of the year and tests showed that my Calprotectin levels were extremely high. I had a colonoscopy which didn't find anything, and subsequent tests showed that Calprotectin levels were dropping so I thought that would be the end of it. However, a routine test has now shown that levels are high again and I have to go back in for a flexible sigmoidoscopy. Does anyone have any experience of this kind of thing - I've had a quick google and high Calprotectin levels seem to be indicative of IBD or cancer. Don't want to scare myself further - could there be a less sinister explanation?