ANA: ANA is an antibody test used to help diagnose a variety of autoimmune diseases (body produces antibodies against its own tissues).It can be a difficult test to analyze on its own, particularly if tests for specific antibodies are negative; analysis would depend on reason for it to have been checked,other labs/studies etc.Positive ANA (lower than that, though) can even happen in absence of disease.
Answered 10/16/2014
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