This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Polycystic Ovarian Syndrome, Subject name: Gynaecology & Obstetrics
[{'content': 'All of the following our the diagnosis of PCOS except \nSelect and explain. \nA. Elevated LH, B. Reversed estradiol : estrone ratio, C. Reduced SHBG level, D. Reduced serum insulin level', 'role': 'user'}, {'content': 'Answer: D \nExplanation: BIOCHEMICAL MARKERS OF PCOD LH level is elevated and/or ratio of LH:FSH is > 3:1 Reversed estradiol:estrone ratio- The estrone level is markedly elevated. SHBG level is reduced. Androstenedione level is elevated. Serum testosterone and DHEA may be marginally elevated. Raised serum insulin level (ratio of fasting glucose: fasting insulin is < 4.5)', 'role': 'assistant'}]