Staphylococcus Tests

Question 1

Staphylococcus Tests

Answer 1

Coagulase
Novobiocin Susceptibility
Bacitracin Susceptibility

Question 2

Coagulase test used for?

Answer 2

differentiating S. aureus from G(+) orgsn.

Question 3

Coagulase test enzyme?

Answer 3

Coagulase

Question 4

Coagulase (+) result?

Answer 4

clumping (+) S. aureus

Question 5

Coagulase (-) result?

Answer 5

liquid

Question 6

Novobiocin tests for?

Answer 6

sensitive true pathogen /resistant novobiocin sensitive to antibiotic Novobiocin

Question 7

Novobiocin (+) test

Answer 7

resistant

Question 8

S. saprophyticus (UTI) Novobiocin result?

Answer 8

resistant

<16mm

Question 9

S. epidermidis novobiocin result?

Answer 9

sensitive

>16mm

Question 10

Bacitracin test used for ?

Answer 10

distinguish Staphylococcus (resistant) from Micrococcus (susceptible).

Question 11

Bacitracin enzyme?

Answer 11

none

Question 12

Bacitracin (+) result?

Answer 12

(resistance/ sensitivity)

Question 13

Staphylococcus bacitracin result?

Answer 13

bacitracin resistant

Question 14

Micrococcus bacitracin result?

Answer 14

bacitracin sensitive

Question 15

Bacitracin zone of inhibition?

Answer 15

resistant <10mm

Question 16

Bacitracin zone of Inhibition?

Answer 16

Susceptible >10mm

Question 17

MSA test result?

Answer 17

(+) mannitol fermentation (yellow) carrier of S. aureus