Test guide
Antibody Serology Tests
Antibody serology tests look for specific antibodies in your blood. Antibodies are proteins your immune system makes to fight disease-causing germs (also called pathogens), such as viruses and bacteria .
What it is for
Antibody serology tests are generally used to look for antibodies. However, the type of test used can vary depending on: The most common use for an antibody serology test is to look for antibodies to specific diseases. These are called endogenous antibodies, and your body makes them after being exposed to a pathogen or after being vaccinated against it. When testing for endogenous antibodies, your provider can: 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.
Also known as
- antibody titer test, antibody test, antibody serum test
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