New blood-based test detects lymph node metastasis in individuals with high-risk T1 colorectal cancer Scientists at City of Hope, a world-renowned independent research and treatment center for cancer and diabetes, have developed a novel, noninvasive liquid biopsy test for detecting lymph node metastasis in individuals with high-risk T1 colorectal carcinoma. Research on the development of the blood test was reported in a new study published in Gastroenterology, a journal of the American Gastroenterological Association. This blood-based test is an example of the theranostic (a term that combines "therapeutic" and "diagnostic") approach at City of Hope, whose goal is to help every patient receive personalized treatment appropriate for their specific disease. Development of blood-based biopsies to detect and monitor tumors is one of the leading-edge technologies under investigation to help patients with cancer.