TY - RPRT TI - Development and validation of a novel LC-MS/MS method for simultaneous quantification of fidaxomicin and metabolite (OP-1118) from feces for gut pharmacobiome studies. AU - Chenlin Hu AU - Taryn Eubank AU - Ann M McKelvey AU - Weiqun Wang AU - Julian G Hurdle AU - Kevin W Garey PY - 2026 DO - 10.1016/j.jchromb.2026.125249 UR - https://pubmed.ncbi.nlm.nih.gov/42594503/ ID - 42594503 ER -