Anti-nuclear antibody (ANA) tests are used to help diagnose systemic autoimmune diseases such as lupus, Sjögren’s syndrome, polymyositis, rheumatoid arthritis, and scleroderma. A positive result on an ANA test means that the person has autoantibodies that are reacting against their own cells.
What Does a Positive ANA Test Result Mean?
A positive ANA test result means that the person has autoantibodies, which are antibodies that attack their own body’s cells and tissues. This can be a sign of an underlying autoimmune disorder, though having a positive ANA does not necessarily mean that the person has an autoimmune disorder.
What Is an Autoimmune Disorder?
Autoimmune disorders are conditions where the body’s immune system attacks its own cells and tissues. This can cause inflammation, pain, and damage to organs and tissues. Some common autoimmune disorders include lupus, Sjögren’s syndrome, polymyositis, rheumatoid arthritis, and scleroderma.
What Are the Next Steps if the ANA Test Is Positive?
If the ANA test is positive, the next step is to have further testing done to determine the underlying cause. This may include additional blood tests, imaging tests, or a biopsy of the affected tissue. The results of these tests will help the doctor diagnose the specific autoimmune disorder and develop an appropriate treatment plan.