​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​The Association of Public Health Laboratories (APHL)​ works to strengthen laboratory systems serving the public’s health in the United States and globally. APHL represents state and local governmental health laboratories in the United States; this includes public health, agricultural, environmental and other related laboratories. Its members, known collectively as “public health laboratories​​,” monitor, detect and respond to health threats.