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Unit 3 Test Review

What type of organisms does MacConkey Agar suppress?
E. coli
Salmonella
Gram positive bacteria
Gram negative bacteria
Nasal and rectal swabs are routinely collected for?
MRSA & VRE screening
Group B Strep screening
Group A Strep DAT testing
C. Difficile toxin assays
Which specimen requires an anaerobic culture?
Superficial leg wound
Feces
Urine
Liver abscess
Media for the isolation of Campylobacter species is incubated under what conditions?
42ºC anaerobic
42ºC microaerophilic
35ºC microaerophilic
35ºC aerobic
The amount of growth on urine cultures is graded in what way?
Few, Moderate, Many
1+, 2+, 3+, 4+
Number of CFU/L
Urine cultures are not graded
Pregnant women are screened for what type of organism?
Group A Streptococcus
Group B Streptococcus
Yeast infections
C. difficile
Which method of urine collection is best for routine C&S?
Clean-catch midstream
24 hour urine
Bagged urine
Catheter tip
Which specimen type is considered STAT?
Throat
Sputum
CSF
Feces
Organisms that die in the presence of oxygen are called?
Facultative Anaerobes
Obligate Aerobes
Microaerophiles
Obligate Anaerobes
What is the role of SPS in blood culture bottles?
Inhibits phagocytosis
Increases phagocytosis
Lysis of RBCs
Forms clots
What specimen type requires a Gram Stain?
Throat
Wound
Urine
Feces
Cary-Blair media is used for?
Throat swabs
Urine cultures
Fecal cultures
Sputum cultures
A dry, sterile container can be used for?
Pinworm collection
C. Difficile toxin assay
Ova and Parasite
 
The blood to broth ratio in blood culture bottles is?
1:1
1:5
1:10
1:15
CIN plates are incubated aerobically at 28-30ºC for what type of specimen?
Superficial wound swabs
Feces
Male urethral swabs
CSF
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