Bacteriological tests

gram positive cocci

• gram positive cultured
  • catalase positive - staphylococci
    • coagulase test
      • coagulase positive - S. aureus
      • coagulase negative - other staphylococci
  • catalase negative - streptococci
    • check hemolysis
      • alpha hemolytic
        • S. pneumoniae
        • viridans streptococci group
          • Optochin test
            • optochin positive - S. pneumoniae
            • optochin negative - other streptococci
    • beta hemolytic
      • Lancefield group A - S. pyogenes
      • Lancefield group B - S. agalactiae
      • Lancefield group C - S. dysgalactiae
      • Lancefield group D - S. bovis, E. faecalis, E. faecium
      • Lancefield group G - S. dysgalactiae