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| Unified Program in Infectious Diseases, Montefiore Medical Center and Albert Einstein College of Medicine. |
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| MIC - Macrodilution. Defined aliquots of bacteria are inoculated into a nutrient broth containing a dilution series of antibiotic concentrations (in this case, Staph aureus and tetracycline). | MIC - Macrodilution. In this case, bacterial growth occurred at a Tetracycline concentration of 0.8 mcg/ml but not at 1.6 mcg/ml. Thus, the minimum inhibitory concentration is read as 1.6 mcg/ml. |
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| ETest. This commercially-prepared strip creates a gradient of antibiotic concentration when placed on an agar plate | ETest strip close-up | ETest meniscus - the MIC corresponds to the point where the bacterial growth crosses the numbered strip. |
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