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: Pharmacology
[{'content': 'Pre-treatment evaluation for lithium therapy should include - \nSelect and explain. \nA. Fasting blood sugar, B. Serum creatinine, C. Liver function tests, D. Platelet count', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Serum creatinine Pretreatment evaluation for Lithium therapy o Serum creatinine (or 24 hour urine creatinine) o Thyroid function (T3, T4, TSH) o ECG o Electrolytes o Complete blood count o Pregnancy test", 'role': 'assistant'}]