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 ...

Credit: Getty Images. This extension applies to all unopened vials that have been held in accordance with storage conditions detailed in the manufacturer's labeling. The shelf-life of REGEN-COV and ...

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 ...

If your doctor thinks you might have lupus, they may ask you to take blood tests to check for antibodies in your blood. The most common antibody test is called the antinuclear antibody (ANA) test.