Follicular Fluid or Serum Level of Inhibin-B: Which One is an Effective Marker of Follicular Development in IVF Patients?

Materials and Methods: This prospective study was performed on 70 patients undergoing controlled ovarian hyperstimulation and followed by the IVF Department between February 2009-June 2009. Age, body mass index (BMI), basal levels of folliclestimulating hormone (FSH), estradiol (E2), luteinizing hormone (LH), ovarian volume, and number of antral follicles were compared between the good responders and poor responders. Blood samples of inhibin-B were collected before the treatment, on the day of human chorionic gonadotropin (hCG) administration, and on the day of oocyte pick-up. Follicular fluid samples were obtained from dominant follicles during oocyte retrieval. These parameters and characteristics of the cycles were compared between the good responders and poor responders.