ฝึกทำข้อสอบ NL

A 25-year-old woman presents with oligomenorrhea (4–5 menses per year), acne and hirsutism. Her BMI is 31 kg/m². Pregnancy test, TSH, prolactin and 17-hydroxyprogesterone are normal. Transvaginal ultrasound shows polycystic-appearing ovaries in both ovaries. She is diagnosed with polycystic ovarian syndrome (PCOS) according to the Rotterdam criteria. Which of the following laboratory results is typically increased and corresponds to the biochemical component of the diagnostic criteria?