ANA Test: Cost, Purpose, Procedure, Normal Range [2025]
The Antinuclear Antibody (ANA) test is a laboratory blood test that is commonly used to help diagnose autoimmune diseases. It looks for the presence of autoantibodies, which are proteins that wrongly attack the body’s own tissues. When the immune system, which typically protects the body against dangerous invaders, erroneously targets healthy cells and tissues in […]