Several blood tests can show if there is a response to inflammation in the body. Unfortunately not everyone that has inflammation has elevated indicators in the blood. The two tests that come to mind are a SED rate and a CRP. If either is elevated, it can be a sign of inflammation. Some people run elevated White blood counts. I had high WBCs for years and when they got me on Imuran, it brought that and the SED rate down.
More imprtant are your symptoms. If your bowel function becomes more normal, you don't have pain, and other symtpoms associated with your flares cease, then it is a sign that the flare is subsiding/responding to medication.
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