When you come to the WVU Cancer Institute for evaluation, your physicians and team of colorectal cancer experts can order an array of tests as well as review your medical records and health history to gather as much information as they can about your diagnosis to better determine a personalized treatment plan. While there are various tests for colon cancer, colonoscopy is considered the standard in screening tools. A biopsy may be needed if cancer is suspected. An ultrasound, MRI, or PET scans can be performed to identify the size and location of tumors.