A method of detecting a predisposition to, or the incidence of, colorectal cancer in a fecal sample comprises, in a first step (a), detecting the presence of blood in the fecal sample, wherein detection of the presence of blood is indicative of a predisposition to, or the incidence of, colorectal cancer. The method additionally comprises, in second step (b), detecting an epigenetic modification in the DNA contained within the fecal sample, wherein detection of the epigenetic modification is indicative of a predisposition to, or the incidence of, colorectal cancer. Based upon a positive result obtained in either (a) or (b) or in both (a) and (b) a predisposition to, or the incidence of, colorectal cancer is detected. Related methods and kits involve detecting an epigenetic modification in a number of specific genes.