Can someone explain the screen by crithidia? I have a negative but positive ANA and AntiDNA
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replied November 9th, 2018
ANA is a sensitive test for systemic lupus erythematosus which means that a negative test would virtually rule out the disease however dsDNA is used for confirmation as a positive dsDNA test would rule in the disease. You did not mention which specific test was positive or negative. Moreover there is no such test as crithidia which you mentioned

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