The gold standard test for diagnosing appendicitis is a computed tomography (CT) scan. This imaging test uses a combination of X-rays and computer technology to create detailed images of the abdomen and pelvis. The CT scan is very accurate at determining the size and location of the appendix, as well as any inflammation or other abnormalities in the surrounding tissues. It can also help to identify other potential causes of abdominal pain, such as diverticulitis or ovarian cysts. In many cases, a CT scan is the only test needed to diagnose appendicitis.
The CT scan is most often recommended if a person is exhibiting classic symptoms of appendicitis, such as abdominal pain, fever, nausea, and vomiting. It may also be requested if a person has atypical symptoms, such as localized abdominal pain or abdominal pain that comes and goes. In some cases, a CT scan may be done in combination with other tests, such as a pelvic ultrasound or a blood test to look for signs of infection.
In addition to the CT scan, the doctor may also order other tests to rule out other potential causes of abdominal pain. These can include a physical exam, urine tests, and blood tests. The doctor may also request an appendectomy, which is a surgical procedure to remove the appendix. The appendix is usually sent to a lab for testing to determine whether it is infected or inflamed.
Overall, the gold standard test for diagnosing appendicitis is a CT scan. This imaging test is very accurate at determining the size and location of the appendix, as well as any inflammation or other abnormalities in the surrounding tissues. It can also help to identify other potential causes of abdominal pain. In many cases, a CT scan is the only test needed to diagnose appendicitis.