may be a normal elevation of white blood cells, without any infection present. CRP is an acronym for C-reactive protein. It is an acute phase response protein produced by the liver in response to any infection or inflammatory process in the body. Again, like the FBC, it is not a specific test. It is another crude marker of infection or inflammation. Inflammation at ANY site can lead to the CRP to rise. A significant rise in CRP with corresponding signs and symptoms of appendicitis is a useful indicator in the diagnosis of appendicitis. It is said that if CRP continues to be normal after 72 hours of the onset of pain, it is likely that the appendicitis will resolve on its own without intervention. A worsening CRP with good history is a sure signal fire of impending perforation or ruptures and abscess formation
2. Urine Test: Urine test in appendicitis is usually normal. It may however show blood if the appendix is rubbing on the bladder, causing irritation A urine test or urinalysis is compulsory in woman, to rule out pregnancy in appendicitis, as well to help ensure that abdominal pain felt and thought to be acute appendicitis not in fact, due to ectopic pregnancy.
3. X-Ray in 10% of patients with appendicitis, plain abdominal x-ray may demonstrate hard formed feces in the lumen of the appendix (Fecolith).It is agreed that the finding of Fecolith in the appendix on X-ray alone is a reason to operate to remove the appendix, because of the potential to cause worsening symptoms. In this respect, x- ray is no longer requested routinely in suspected cases of appendicitis. An abdominal X-ray may be done with a barium enema contrast to diagnose appendicitis. Barium enema is whitish toothpaste like material that is passed up into the rectum to act as a contrast. It will usually fill the whole of the large bowel. In normal appendix, the lumen will be present and the barium fills it up and is seen when the x-ray film is shot. In appendicitis, the lumen of the appendix will not be visible on the barium film.
4.Ultrsound