[Importance of classifying beta hemolytic Streptococci and comparison of various tests used for the classification]
Related Experiment Video
Updated: Jul 28, 2026

Preparation of a Blood Culture Pellet for Rapid Bacterial Identification and Antibiotic Susceptibility Testing
Published on: October 15, 2014
Abstract:
We grouped hundred beta hemolytic streptococci, isolated from several clinical specimens with precipitation, coagglutination test and biochemical properties. Among the hundred isolates, 64 percent belonged to group A, 19 percent to group B. 3 percent to group C, 2 percent to group D and 12 percent to group G with the precipitation test. The positive correlation between biochemical and precipitation tests was determined to be 91 percent, where as 99 percent of the strains were correctly identified with the coagglutination test. It is important to group Streptococci, from the epidemiological and clinical aspects, with a rapid and reliable method, chosen due to laboratory feasibilities.
Related Concept Videos
Differential Staining Technique
Special Staining Techniques
Microbial Classification System
Methods of Classification and Identification
Modern Molecular Taxonomy
Automated Microbial Diagnostics

