Hardy Diagnostics BHI Broth with Ciprofloxacin, 10μg/ml is a selective pre-enrichment broth for gram-negative microorganisms with reduced susceptibility to ciprofloxacin. Pre-enrichment with the broth is performed with a mixed population of microorganisms from a lab sample. Hardy Diagnostics MacConkey Agar with Ciprofloxacin, 10μg/ml is a companion product meant to act as a screening subculture medium for the selective isolation of non-susceptible Ciprofloxacin, gram-negative microorganisms. Concomitant cultures are necessary to recover microorganisms for identification, susceptibility testing, and epidemiological typing. A negative result does not preclude fluoroquinolone non-susceptible, gram-negative colonization. Culture results obtained from these products are not intended to guide therapy.