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Understanding Autoantibodies: What A Positive Result Really Means

Writer's picture: Dr. Isabelle AmiguesDr. Isabelle Amigues

If you've recently had a blood test that showed a positive antinuclear antibody (ANA) or another autoantibody, you might be wondering what it means for your health. For example, “I have a positive RNA polymerase III antibody. Does that mean I have scleroderma?” This is a common concern.




What Are Autoantibodies?


Autoantibodies are proteins made by the immune system that mistakenly target the body's own cells. While certain autoantibodies are associated with specific autoimmune diseases, a positive result does not automatically indicate that a person has an autoimmune condition.



Diagnosis Is More Than Just Blood Tests


It's crucial to understand that doctors do not diagnose autoimmune diseases solely based on antibody tests. A proper diagnosis involves considering clinical symptoms, patient history, and other tests. For instance, an ANA test may be positive in healthy individuals without any autoimmune disease.



The Role of Autoantibodies in Disease Development


Research has shown that some individuals develop autoantibodies before any clinical symptoms appear. A study involving healthy veterans found that those who later developed lupus had positive autoantibodies before showing any signs of the disease. This leads to an important hypothesis: autoantibodies may precede the actual onset of autoimmune diseases, but this doesn’t guarantee that a disease will develop.



Why Not Treat Immediately?


You might wonder why treatment isn’t initiated immediately upon finding a positive antibody. One reason is that many people with positive autoantibodies do not develop an autoimmune disorder. For example, studies have indicated that using medications like hydroxychloroquine in patients with only positive antibodies—without symptoms—does not yield any significant benefits.


Instead, the focus should be on monitoring and addressing symptoms if they arise. The goal is to intervene when there's evidence of organ damage or inflammation.



When Is Treatment Necessary?


If you have a positive autoantibody but no symptoms, treatment may not be warranted right away. However, if you experience symptoms like joint pain, skin changes, or other related issues, your healthcare provider may suggest treatment to prevent potential progression to a full-blown autoimmune disorder.

It's also important to consider your family history. If autoimmune diseases are common in your family, your risk might be higher, which could warrant closer monitoring or preemptive treatment.



The Importance of Clinical Symptoms


Ultimately, diagnosing an autoimmune disorder hinges on clinical symptoms rather than just positive autoantibody tests. Symptoms such as:

  • Raynaud’s phenomenon: Changes in skin color in response to cold or stress

  • Skin tightening

  • Joint pain or swelling

  • Shortness of breath

These clinical indicators are vital for diagnosis. Even if autoantibodies are absent, a diagnosis may still be possible if the symptoms align with a specific autoimmune condition.


While a positive autoantibody test can provide valuable information, it is not the sole factor in diagnosing autoimmune diseases. Many individuals with positive autoantibodies may never develop an autoimmune disorder. Therefore, it is crucial to discuss any concerns with your healthcare provider and consider your symptoms, family history, and overall health when evaluating your risk.



Are you in need of a compassionate rheumatologist who will listen and work with you toward disease remission? If you're searching for the best direct care rheumatologist in Denver, UnabridgedMD is here for you. Click here to get in touch https://www.unabridgedmd.com or call 303-731-4006




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