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
Serum FSH concentrations vary signiﬁcantly across the cycle, hence serum FSH concentration is best obtained during the early follicular phase (cycle day 2–4)
10-Aug
4-Jan
13-15
24-26