ANA testing screens for a broad group of autoantibodies that target nuclear components, with a positive result raising the possibility of an autoimmune disorder. Lupus, scleroderma, Sjögren syndrome, mixed connective tissue disease, and autoimmune hepatitis are among the conditions associated with ANA positivity.
This test is used in evaluating patients with multisystem inflammatory symptoms, persistent joint pain, unexplained rashes, or organ involvement that suggests autoimmune disease. Positive results are typically interpreted alongside titer, pattern, and follow-up specific antibody testing. Sample type is serum.
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