This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Procalcitonin is used as marker of 
Select and explain. 
A. Cardiac dysfunction in acute coronary syndrome, B. Menstrual perodicity, C. Pituitary function, D. Sepsis
D: Sepsis
Answer: D: Sepsis 
Explanation: ref Harrison 18/e 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