Calprotectin levels and GP’s lack of concern

Hi All, I have been suffering from Abdominal pain for over 8 years without any real diagnosis and recently after a particularly severe pain attack I ended up seeing a locum doctor who sent me for a Calprotectin test. The results came back at a level of 473 ug/g! I then had to see my regular doctor who said this was quite normal and that I might have IBS! However, every website I look at including the NHS one says this level is far too high and would be more indicative of IBD and warrants further investigation. Wondering what others experience is regarding Calprotectin levels?