In the Kirby-Bauer test, what is used to grow streptococci that do not grow adequately on unsupplemented Mueller-Hinton agar?
A) Chocolate agar
B) PEA agar
C) Mueller-Hinton agar with 5% sheep blood
D) Mueller-Hinton agar with 5% rabbit blood

Question

Quizplus · Accepted Answer

Mueller-Hinton agar with 5% sheep blood is used to grow streptococci that do not grow adequately on unsupplemented Mueller-Hinton agar in the Kirby-Bauer test. This is because the addition of sheep blood provides nutrients that are necessary for the growth of these organisms. Chocolate agar (A) and PEA agar (B) are not typically used in the Kirby-Bauer test. Mueller-Hinton agar with 5% rabbit blood (D) may be used in certain situations, but it is not as commonly used as Mueller-Hinton agar with 5% sheep blood.

In the Kirby-Bauer Test, What Is Used to Grow Streptococci