Medical Laboratory Scientist ASCP Practice Exam 2025 – Complete Study Guide

Furazolidone resistance is a key characteristic that helps distinguish Micrococcus species from other similar organisms, particularly Staphylococcus species. Micrococcus species are typically resistant to furazolidone, while many Staphylococcus species, especially Staphylococcus aureus, are susceptible. When furazolidone resistance is noted in a culture, it indicates the possible presence of Micrococcus species rather than Staphylococcus or Enterococcus, as these latter groups behave differently in response to this antibiotic. Thus, recognizing this resistance pattern plays a crucial role in laboratory identification and differentiation of these organisms, leading to the conclusion that the presence observed is representative of Micrococcus species.