passive agglutination

(redirected from indirect agglutination)

pas·sive ag·glu·ti·na·tion

agglutination of particles that have been coated with soluble antigen, by antiserum specific for the adsorbed antigen.

passive agglutination

A test for the presence of a specific antibody in which inert particles or cells with no foreign antigenic markers are coated with a known soluble antigen and mixed with serum. If clumping occurs, the patient's blood contains antibodies specific to the antigen. In the past, red blood cells were used as the carriers after they were washed to remove any known antibodies; currently, latex, bentonite, and charcoal also are used.
See also: agglutination
References in periodicals archive ?
gondii using a commercial enzyme-linked immunosorbent assay kits and indirect agglutination test (ELISA, Lanzhou Veterinary Research Institute of Chinese Academy of Agricultural Sciences) according to the manufacturer's instructions.
Confirmatory tests for syphilis by indirect agglutination of anti - treponema pallidun,pregnancy tests cassette serum / urine,rapid tests hepatitis b,syphilis rapid tests,hiv rapid testing etc.
Indirect agglutination test was done between cervicovaginal secretions and sperm of the participats' husbands for the detection of antibodies against sperm in cervicovaginal secretions.
Rhesus D typing was done using anti-D serum (Biotec, Ipcswich, UK) agglutination method and the negative results were confirmed using the indirect agglutination test (IAT) procedure.