The serum bactericidal test (SBT) involves:
a. serial dilutions of antimicrobials in ca-tion-adjusted Mueller-Hinton broth.
b. 99.9 reduction in CFU/mL, compared with the organism concentration in the original inoculum.
c. using the patient's serum to detect its bacteriostatic and bactericidal activity.
d. subculturing the tubes of a completed broth dilution test showing no visible growth.
MIC endpoints can be reported results obtained by the following conventional AST methods EXCEPT:
a. agar dilution.
b. automated broth dilution.
c. disk Diffusion.
d. E-test.
Which antimicrobial susceptibility testing method uses a series of plates with different antimi-crobial concentrations inoculated with multiple bacterial isolates per plate?
a. Agar dilution
b. Automated broth dilution
c. Disk Diffusion
d. E-test
In the microdilution broth dilution method, the interpretive criteria for the susceptible, interme-diate, or resistant categories are based on the:
a. quantitative differences (i.e., CFU/mL) in the turbidity in the test well.
b. correlation of the MIC with se-rum-achievable levels of the common doses of the antimicrobial agent and the-rapeutic outcomes based on clinical stu-dies.
c. either the presence or absence of zones of inhibition.
d. FDA's recommendations based on a na-tional database of participating health care agencies providing antibiograms for re-view and publication as a summative re-port.
The taxon that is composed of similar species that have several important features in common but differ sufficiently to still maintain their status as individual species is which one of the fol-lowing?
a. Class
b. Order
c. Family
d. Genus
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