This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Enzymes, Subject name: Biochemistry
Serum alkaline phosphatase levels increases in: 
Select and explain. 
A. Hypothyroidism, B. Carcinoma of prostate, C. Hyperparathyroidism, D. Myocardial infarction
C: Hyperparathyroidism
Answer: C: Hyperparathyroidism 
Explanation: Ans. C. HyperparathyroidismSerum alkaline phosphatase is increased in hyperparathyroidism, rickets, obstructive jaundice and Paget's disease.