Compositions, kits, and methods for the diagnosis, prognosis, and monitoring of bladder cancer in a subject are provided by detecting in a urine sample a combination of biomarkers. In one embodiment of the invention, a nine-biomarker panel consisting of IL-8, MMP9, SDC1, CCL18, SERPINE1, CD44, VEGF-A, CA9, and ANG may be detected. In another embodiment of the invention, a three-biomarker panel consisting of CCL18, CD44, and VEGF-A may be detected. In yet another embodiment of the invention, a nine-biomarker panel consisting of CA9, CCL18, MMP12, TMEM45A, MMP9, SEMA3D, ERBB2, CRH, and MXRA8 may be detected.