ANTI NUCLEAR ANTIBODY (IFA)

This is used as a primary test to detect antibodies against one's own cells leading to autuimmune disorders like Lupus, Rheumatoid arthritis, Scleroderma, Addison disease etc. This test can also be positive in many healthy individuals specially adults above 65 years of age. A negative result does not completely rule out the possibility of autoimmune disease. This test gives the endpoint dilution till the result is positive.