Problem: When diagnosing autoimmune disorders, which of the following approaches is a common strategy? Performing radiological scans and biopsies of affected tissues to confirm the diagnosis. Administering targeted antibiotics to address potential autoimmune triggers. Measurement of vital signs and physical examinations to detect obvious symptoms. Evaluation of family history to identify genetic predispositions to autoimmune diseases. Screening for autoantibodies in blood samples and assessing immune system markers.