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Disk vs. eTest (Susceptibility Tests)

About microscopic forms of life, including Bacteria, Archea, protozoans, algae and fungi. Topics relating to viruses, viroids and prions also belong here.

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Disk vs. eTest (Susceptibility Tests)

Postby EmmVeePee » Thu Jun 09, 2005 12:47 am

When would you use one over the other?

If you don't know what I mean (or if I don't know what I mean ;P) Then:

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or

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Greg
Undergraduate, Microbiology
Pennsylvania State University
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Postby b_d_41501 » Thu Jun 09, 2005 2:23 pm

The Kirby-Bauer method, also known as the disk diffusion method, is routinely used for finding the MBC (Minimum Bactericidal Concentration). The MBC is the smallest concentration at which the bacteria is killed.

The E-Test is used to find the MIC (Minimum Inhibitory Concentration). The MIC is the point at which the clear zone touches the E-Test Strip. The MIC means the smallest concentration at which the bacteria's growth is inhibited.
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