👉 The term "immunoassay" refers to a test used in medicine and biotechnology that detects antibodies or other molecules present on the surface of an organism. These tests can be used to identify specific diseases, diagnose infections, or detect biomarkers for various conditions. Immunoassays are often performed using antibodies or other proteins, and they rely on the ability of the biological sample to bind to these molecules and produce a signal that is detected by a computer or other device.