Autoimmune Disorders - Diagnosis
The first step in diagnosing any autoimmune disorder is usually a review of symptoms. An additional step involves ruling out other medical conditions that might produce similar symptoms.
The final diagnosis for an autoimmune disorder, however, usually involves a blood test. The purpose of the blood test is to look for antibodies. If ankylosing spondylitis is present in the body, for example, very specific antibodies for that disorder will be present. If no such antibodies are found in the patient's blood, the disorder is not present.
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