ANA titer

**ANA titer**

The ANA titer (Antinuclear Antibody titer) is a laboratory test used to detect the presence and concentration of antinuclear antibodies in the blood. These antibodies target the nucleus of the body’s own cells and are often associated with autoimmune diseases such as lupus, rheumatoid arthritis, and scleroderma. The titer value indicates the highest dilution at which these antibodies can still be detected, providing important information for diagnosis and monitoring of autoimmune conditions. Understanding ANA titers helps healthcare providers assess disease activity and guide treatment decisions.