This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'Which of the following condition is not associated with elevated serum total lactate dehydrogenase level? \nSelect and explain. \nA. Hemolysis, B. Stroke, C. Myocardial infarction, D. Muscle crush injury', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Acute MI causes an increase in LDH in 12-24 hours, attains peak value in 48 hours and returns to normal in 1-2 weeks. Because of high concentration of LDH in the RBC, lysis of RBCs causes elevation of LDH levels. Muscle injuries and liver diseases like hepatitis can also cause raised LDH levels. Stroke is not associated with raised LDH levels. Ref: Pocket Guide to Diagnostic Tests By Diana Nicoll, 5th Edition', 'role': 'assistant'}]