A very small number of people who test negative for antinuclear antibody (ANA) in the blood, which is a sign of the most common type of lupus, still have the condition. Lupus is an autoimmune disease ...
An ANA report has three parts: (1) a positive or negative result; (2) if positive, what the titer is; and (3) the pattern of fluorescence. ANA patterns. Titers and patterns can vary between laboratory ...
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