Antinuclear antibody (ANA) test
The Antinuclear Antibody (ANA) test is a blood test that detects antibodies made by the immune system that mistakenly target the body's own cells. A positive result may indicate autoimmune disorders, such as lupus or rheumatoid arthritis, where the body’s immune response is abnormal. However, a positive ANA does not confirm a specific disease, as it can also occur in healthy individuals or with other conditions. Doctors use the test results, alongside symptoms and other tests, to help diagnose and manage autoimmune diseases.
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The Antinuclear Antibody (ANA) test detects antibodies in your blood that may attack your body’s own cells. It is commonly used to help diagnose autoimmune diseases, where the immune system mistakenly targets healthy tissues. A positive ANA test may suggest conditions like lupus or rheumatoid arthritis, but it’s not definitive on its own, as some healthy individuals can also have a positive result. Further evaluation, including additional tests and clinical assessments, is often needed to determine the underlying cause of the symptoms.