Used in clinical and microbiological laboratories for the selective isolation and detection of Streptococcus species, particularly Group A Streptococcus (Streptococcus pyogenes), from throat swabs and other clinical specimens. The medium supports the growth of pathogenic streptococci while inhibiting the growth of commensal bacteria and fungi through selective agents. It allows for rapid identification by promoting characteristic hemolysis patterns, aiding in the diagnosis of streptococcal pharyngitis and other infections. Commonly used in pediatric and outpatient settings for quick screening and culture confirmation.