Test guide
Autoantibody Testing
Autoantibody testing checks a sample of your blood for autoantibodies, proteins made by the immune system .
What it is for
Every autoantibody test is used to help diagnose or monitor an autoimmune disease. However, because the types of autoantibodies can vary, there are different types of autoantibody tests. Some of these can be used to diagnose autoimmune conditions that affect only one organ. For example: Other tests can be used to diagnose autoimmune conditions that affect multiple organs. For example: Source: MedlinePlus, National Library of Medicine. Medical test information is public domain. Source identity and definition checked automatically on 2026-10-18. No individual clinical interpretation or human reviewer is asserted.
Limitations
Reference intervals and interpretation depend on the laboratory, specimen, method and clinical context. This source definition is educational information; it does not establish a diagnosis, product approval or suitability for an individual.
Reviewed products
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