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Wednesday, April 3, 2013

Lupus test

The ANA test or anti-nuclear antibody is used to test for SLE or lupus.  Normal or healthy people can also test positive for ANA but in low titers.  ANA test greater than 1/160 are significant and need follow up tests.  Tests such as dsDNA or Smith can confirm lupus.  An antiRO and anti La test is suggestive of Sjogren's.  This test should only be done if there is a suspicion of connective tissue disease.

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