A 28-year-old lady is suspected to have the polycystic ovarian disease. The sample for testing LH & FSH are best taken on the following days of the menstrual cycle: (A) 10-Aug, (B) 4-Jan, (C) 13-15, (D) 24-26
Answer is B. Serum FSH concentrations vary signiﬁcantly across the cycle, hence serum FSH concentration is best obtained during the early follicular phase (cycle day 2–4)