In an award-winning study appearing in Clinical Chemistry, Jennifer Colby, PhD, assistant professor of Pathology, Microbiology and Immunology at Vanderbilt University Medical Center and her husband, Jake Hughey, PhD, assistant professor of Biomedical Informatics and Biological Sciences at VUMC, identify 13 previously unknown drug compounds that cause false positive screenings for amphetamines, buprenorphine (an opioid), cannabinoids and methadone.