There is no specific blood or fecal test that is diagnostic for CD. Elevated white blood cell, C-reactive protein, erythrocyte sedimentation rate (ESR) or platelet count are obvious signs of ...
Conversely, non-invasive methods, which are more widely used, do not require endoscopy. The 13C-urea breath test (UBT) is commonly used, but it is challenging for certain patients, such as children.