<s>[INST] I have normal cholesterol tri-gly LDL/HDL, insulin/BP, dont smoke, drink, I exercise and eat a v. healthy diet but for last 18 mo my crp went from 0.5-1.0 to between 4 and 6.. Dr cant figure it out-all tests normal;ANA and rheumatoid factor  and SR normal. Im worried some occult cancer is lurking!Thanks for any help. [/INST] Hello, Thanks for choosing Chat Doctor for posting your query. I have gone through your question in detail and I can understand what you are going through.CRP is a very non-specific predictor and the levels may increase even with mild fever or stress. There is nothing to worry. The fact it's only the CRP that has come high suggests that it may not be a cancer. Hope I am able to answer your concerns. If you have any further query, I would be glad to help you. In future if you wish to contact me directly, you can use the below-mentioned link:bit.ly/ Chat Doctor.  </s>