YourPDX is a functional oncology drug sensitivity test that is performed in a living system or in vivo, which is a Latin term for within the living. It refers to tests, experiments, and procedures that researchers perform in, or on, a whole living organism. The term pharmacology is a branch of science that deals with the testing of drugs and evaluating their actions on living systems. The in vivo pharmacology or functional drug sensitivity testing we perform at Certis involves closely replicating an individual’s unique form of cancer in very specialized, immunocompromised research mice, then testing tumor response to multiple therapeutic options simultaneously in these personalized mouse avatars. The data we gather can help inform next-line treatment strategies for an individual’s unique form of cancer.