“…Analytical methods for determination of the FF and/or its metabolite florfenicol amine (FFA) in blood samples, edible tissues or drug formulations are primarily described in the literature. For example, the following methods were used: voltammetric method [ 13 ], enzyme-linked immunosorbent assay (ELISA) method [ 14 ], ultraviolet-visible (UV-Vis) spectrophotometric method [ 15 ], near-infrared spectroscopy [ 16 ], capillary electrophoresis [ 17 ], and chromatographic methods such as thin-layer chromatography (TLC) [ 18 ], gas chromatography (GC) [ 19 ], (ultra)high-performance liquid chromatography ((U)HPLC) with ultraviolet (UV), diode array detector (DAD) or fluorescence (FL) detector [ 20 , 21 , 22 , 23 , 24 , 25 ], and liquid chromatography-tandem mass spectrometry (LC-MS/MS) [ 26 , 27 , 28 , 29 ]. Only several reported papers included and described the analytical methods for determining the FF in urine samples of animal origin [ 1 , 11 , 12 , 30 , 31 , 32 , 33 ].…”