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: Gynaecology & Obstetrics
[{'content': 'Which of the following hormone level is evaluated for testing ovarian reserve? \nSelect and explain. \nA. LH, B. LH/FSH ratio, C. FSH, D. FSH/LH ratio', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Tests used to detect ovarian reserve are basal FSH, basal estradiol and inhibin B levels. Basal FSH is an impoant predictor of ovarian reserve and patients with levels greater than 20 mIU/ml are poor responders to ovulation induction. Basal estradiol levels greater than 50pg/ml also predicts poor ovarian reserve. Inhibin B is a glycoprotein secreted by granulosa cells of the ovary, with declining ovarian function the granulosa cell activity declines and inhibin levels will fall.', 'role': 'assistant'}]