Gram Positive Cocci - Bacteria Identification Algorithm
Catalase(+)
- Coag(+): Staphylococcus aureus
- Coag(-)
- Oxidase(+), Bacitracin(S): Micrococcus sp
- Oxidase(-), Bacitracin(R)
- Novo(S): Staphylococcus lugdunensis, Staphylococcus epidermidis and CONS
- Novo(R): Staphylococcus saprophyticus
Catalase(-)
- Esculin(-)
- α-Heme
- Optochin(S): Streptococcus pneumoniae
- Optochin(R): Viridans Strep.
- β-Heme
- Bacitracin(S): Streptococcus pyogenes (GAS)
- Bacitracin(R): Streptococcus agalactiae (GBS)
- Esculin(+), α/β/γ Hemolysis
- 6.5% NaCl(+): Enterococcus sp.
- 6.5% NaCl(-): Non-Enterococcus Group D Streptococci
by Cullen Lilley, MS, MDxT(AAB) @cullen_lilley
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