Lab Flashcards
1
Q
Catalase test
A
+=staph
- = strep
2
Q
coagulase test
A
+ = aurelis
- = epidermis
3
Q
bacitracin
A
Group A strep vs beta hemolytic
4
Q
CAMP test
A
synergy between one of exoenzymes of group B strep and hemolysin of S. aureus
thick line of S. aureus down middle
-unown perpendicular 5mm away
arrow=gorup B strep (Strep agalactiae)
-CAMP from group B interacts with hemolysin in Staph Aureus to make a huge zone of hemolysis
no arrow=not group B
5
Q
OPtochin disc test
A
+= S. pneumonia from other alpha-hemolytic streptococci
- = if not group D (bile escheilin negative) then it is S. mitis (virdians)
6
Q
Bile eschilin test
A
alpha, beta, gamma hemolytic
Postiive-blackened=do NaCl
Negative=not group D
7
Q
Group D
A
Strep Bovis/enterococcus
8
Q
NaCl test
A
Growth=enterococci
No growth=S. bovis
