immunodiagnosis

/ˌɪmjənoʊˌdaɪəɡˈnoʊsɪs/
noun
  1. A medical test that uses the body's immune response (such as antibodies) to identify a disease or condition.
    • Immunodiagnosis is commonly used to test for HIV and hepatitis.
    • Thanks to immunodiagnosis, the infection was detected within hours.
    • The doctor ordered an immunodiagnosis to check for a rare autoimmune disease.