Tests

• Catalase

  positive: staphylococcus and micrococcus

  negative: streptococcus
• Coagulate slide test

  positive: s. Aureus , s. Lugdunesis , s. Shleiferi

  negative: s. Epidermidis
• Coagulate tube test

  positive: s. Aureus

  negative! S. Epidermidis
• Microdase tets

  positive: micrococcus

  negative! Staphylococcus
• Bacitracin

  susceptible: micrococcus

  resistant: staphylococccus
• DNase

  positive: s. Aureus

  negative: s. Epidermidis and saprophyticus
• Mannitol fermentation

  with ferm: s. Aureus

  without: epidermidis
• Novobiocin

  susceptible : s. Epidermidis

  resistant! S. Saprophyticus
• PYR

  positive: s. Lugdunesis and s. Intermedius

  negative: aureus
• Bacitracin (taxo a)

  positive: group a

  negative: group b c f g
• Sxt

  positive: group c and g

  negative: group a and b
• Camp

  positive: group b
• Hippurate

  positive: group b

  negative: group a
• Bile solubility/optochin (taxo p)

  positive: s. Pneumoniae

  negative: other alpha hemolytic strep
• pyr

  positive: group a , enterococcus

  negative: group D non enterococcus
• LAP

  positive: s. Pneumoniae s. pyogenes

  negative: aerococcus
• Bile esculin hydrolysis

  positive: group d Strep

  negative: viridans
• Salt tolerance (6.5 NaCl)

  positive: group D enterococcus

  negative: group D non enterococcus