<prompt> VDRL is an example of-Slide agglutinationTube agglutinationSlide flocculationTube flocculation  <response>: Option 3 Option 1, 2 Slide flocculation test: VDRL and RPR tests used for diagnosis of syphilis. 1. Slide agglutination: To confirm the identification and serotyping of bacterial colonies growni n culture. 2. Tube agglutination is routinely used for: Typhoid fever Widal test: Detects Ab against both H flagellar and O somatic Ag Acute brucellosis Standard agglutination test Blood grouping ABO and Rh grouping Option 4 Tube flocculation test: Kahn test used previously for syphilis. 