Colloidal Gold Immunofiltration Assay

**Semantic type:** Laboratory Procedure

**Definition:** A type of immunoassay in which a solution containing a target antigen is run through a membrane filter to which antibodies specific to the target antigen have been immobilized, and where antibodies labeled with colloidal gold nanoparticles are used for detection.

**Synonyms:** - COLLOIDAL GOLD IMMUNOFILTRATION ASSAY