Michael Laposata, MD, PhD, vividly remembers an exchange he had with an internal medicine resident back in 1984. “I was a first-year clinical pathology resident at the time and he asked me a simple lab test question; he didn’t know how to further evaluate an abnormally prolonged clotting test for a patient with unexplained bleeding,” said Laposata, professor and chair of UTMB’s Department of Pathology. “It surprised me.”