ANA Test - Purpose & Results

An ANA test detects antinuclear antibodies (ANA) in your blood. Your immune system normally makes antibodies to help you fight infection. In contrast, antinuclear antibodies often attack your body’s own tissues, in other words, an autoimmune reaction.

This test is ordered to evaluate for certain autoimmune disorders, such as systemic lupus erythematosus (SLE) and Sjogren syndrome, among other types.

Procedure:

  • A blood sample drawn from a vein in your arm.

Test Preparation:

  • None

Results:

A positive ANA test result means that autoantibodies are present. In a person with signs and symptoms, this suggests the presence of an autoimmune disease. But having a positive result doesn’t mean you have a disease. Many people with no disease have positive ANA tests — particularly women older than 65.

 

* The Content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.