peak acid output (PAO), on the pentagastrin test, after administration of pentagastrin, the sum of the two highest 15-minute outputs of gastric acid multiplied by 2, expressed as mmol/hr.
peak acid output (PAO), on the pentagastrin test, after administration of pentagastrin, the sum of the two highest 15-minute outputs of gastric acid multiplied by 2, expressed as mmol/hr.