<prompt> Endometrial biopsy for infeility test in women should be done at:Ovulatory phaseMenstrual phaseAnytime during cyclePremenstrual period  <response>: Endometrial biopsy Best done preferably around 7 days before the onset of menstruation Secretory changes prove that the cycle has been ovulatory Can predict the functional integrity of the corpus luteum Can detect luteal phase defect 