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J Assist Reprod Genet. 2011 Sep;28(10):893-9. doi: 10.1007/s10815-011-9612-y. Epub 2011 Jul 21.

The value of human chorionic gonadotropin stimulation test in predicting ovarian response during in-vitro fertilization.

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  • 1The Departments of Obstetrics and Gynecology, The Hadassah-Hebrew University Medical Center, Ein-Kerem, POB 12000, Jerusalem, 91120, Israel.



To assess the predictive value of human Chorionic Gonadotropin (hCG) theca-stimulation test for ovarian reserve in women undergoing in-vitro fertilization (IVF) treatments.


39 women were included in the study. All participants received a single hCG 10000 IU injection on cycle day 2-3. Serum levels of estradiol, testosterone, androstenedione and 17-OH progesterone were measured prior to the injection and on days 1, 3 and 7 following the injection. hCG-induced hormone levels were compared with ovarian response during the subsequent IVF cycle.


There were 11 good responders (>10 oocytes) and 22 low responders (<3 oocytes). Before hCG stimulation serum E2 levels were higher in low responders compared to good responders (370.3 ± 443 vs. 138.3 ± 54 pmol/ml). Following hCG stimulation, day 3 androstendione levels showed an increase in good responders compared to low responders. The ratio between day 3 androstendione and day 0 estradiol was significantly different between the two groups (p = 0.03). ROC analysis of this test revealed area = 0.837 (good prediction), which was much better than day 3 FSH (area = 0.635, poor prediction).


These preliminary results demonstrate the potential use of the hCG theca stimulation test in differentiating between good and poor responders. Larger series are needed for further verification of the test in routine clinical application.

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