<prompt> A 28 years old lady is suspected to have polycystic ovarian disease. Sample for testing LH FSH are best taken on the following days of menstrual cycle:4-Jan10-Aug13-1524-26  <response>: In PCOS, determination of FSH and LH levels may help to confirm the diagnosis of polycystic ovaries.These are assayed on 2nd or 3rd day of the cycle. 