An ANA blood test (antinuclear antibody test) is usually performed on a blood sample as part of the diagnostic process for certain autoimmune diseases. It is usually ordered along with other blood ...

If a person experiences joint pain and tests positive for an antinuclear antibody (ANA) test, this may suggest the presence of an underlying condition causing joint problems and discomfort. An ANA ...

Stress isn’t usually the direct cause of a positive ANA test, but it can influence the immune system, potentially exacerbating symptoms in those with autoimmune disorders. If you have symptoms like ...

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 ...