A St. Louis-based startup company hopes to spare many people the discomfort of colonoscopies. Geneoscopy developed a noninvasive alternative using a method to isolate and preserve biomarkers for colorectal cancer in stool samples. Geneoscopy claims its screening tool is more reliable than other noninvasive options, improving accuracy of testing and reducing costs. The company claims the new screening method can accurately detect colorectal cancer.