Antibiotic Resistance Reference

Question

Hi!

Can someone please give me a link to a table where I can find reference value for when the inhibition zone length is counted as resistant or susceptible for E.coli and Tetracycline 10 mikrograms?

Answer 1

Hi. The manufacturer of the antibiotic disk you are using for the Kirby-Bauer disk diffusion test provides the zones of inhibition. First look at the chart for the antibiotic.--tetracycline. Then, choose the zones appropriate for the microbe you are testing, in this case, E. coli, Here is a chart from Becton-Dickinson for their Sensi-disc product. https://legacy.bd.com/ds/technicalCenter/inserts/8840621(201107).pdf

Hope this helps,

Connie