You Are Working in a Clinical Laboratory in a Hospital

question 55

Multiple Choice

You are working in a clinical laboratory in a hospital setting.You're handed a throat swab from a patient.You are told specifically that the physician is only interested in the presence and type of Gram positive cells.Identification isn't the main goal here-just a first step to work towards determining what Gram positive cells might be there.What might you do first to go about working towards this goal?

• A)Perform a Gram stain.
• B)Streak the sample for isolation on a tryptic soy agar general purpose medium plate.
• C)Streak the sample for isolation on a medium that is selective for Gram positive cells while suppressing Gram negative cell growth.
• D)Grow the microbes on the swab by inoculating a tryptic soy broth liquid medium tube.
• E)Perform an acid-fast stain.

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