<prompt> Procalcitonin is used as marker ofCardiac dysfunction in acute coronary syndromeMenstrual perodicityPituitary functionSepsis  <response>: ref Harrison 18e p3419 Procalcitonin is an acute phase reactant which is now useful for being a marker of sepsis Procalcitonin PCT is a biomarker that exhibits greater specificity than other proinflammatory markers eg, cytokines in identifying patients with sepsis and can beused in the diagnosis of bacterial infections 