Urine Drug Test Concentrations Up for Fentanyl, Methamphetamine, Cocaine

TUESDAY, Oct. 29, 2024-- Absolute concentrations of fentanyl, methamphetamine, and cocaine in urine specimens increased from 2013 to 2023, according to a study published online Oct. 24 in JAMA Network Open.Andrew S. Huhn, Ph.D., from the Johns...