“…A similar problem can arise in the use of certain animal feeds and environmental medications [ 70 ]. Consequently, the literature contains many microfluidic devices for the detection of antibiotics and drugs, such as ampicillin [ 71 ], β-lactamase [ 72 , 73 ], 17β-estradiol [ 74 ], bacitracin zinc [ 75 ], chloramphenicol [ 76 , 77 ], clarithromycin [ 78 ], clenbuterol [ 79 ], ciprofloxacin [ 80 ], enrofloxacin [ 81 ], monensin [ 82 ], norfloxacin [ 83 ], streptomycin [ 84 ], and tylosin and tilmicosin [ 85 ].…”