Tests for Identification of Beta-Hemolytic
Streptococcicontinued
Clinical Microbiology Review 166
TEST PRINCIPLE KEY REACTIONS OTHER
Hippurate hydrolysis
Slide agglutination tests
Alternative to CAMP. 2-hr test available.
Tests commercially available for rapid
ID of groups A, B, C, D, F, G strep & S.
pneumoniae. (Most labs only use for
ID of beta hemolytic.)
Organisms that produce
hippuricase (hippurate hydrolase)
hydrolyze sodium hippurate to
benzoate & glycine.
Latex particles coated with group-
specific antibodies agglutinate in
presence of bacterial antigens
GBS pos
Organisms aggluti-
nate in corresponding
antisera
