Several tests predict ovarian reserve in women undergoing assisted reproduc
tive technologies. However, the accuracy of these tests in assessing the nu
mber of the remaining follicles within the ovary (ovarian reserve) has not
been previously validated. The aim of this study was to assess the accuracy
of ovarian reserve tests, namely basal and clomiphene-stimulated follicle
stimulating hormone (FSH) concentrations and gonadotrophin-releasing hormon
e (GnRH) agonist stimulation test in predicting the number of the follicles
within the ovaries. The ovaries of 22 parous women over 35 years of age wh
o underwent oophorectomy were examined histologically for follicle number.
Early follicular phase serum FSH, clomiphene citrate challenge tests (CCCT)
and GnRH agonist stimulation test (GAST) were performed in the menstrual c
ycle prior to the surgery, The predictive value of these tests was then ass
essed. A positive correlation was detected between basal serum oestradiol c
oncentrations and follicles per unit tissue but no significant correlation
was detected between basal and clomiphene-stimulated FSH and follicles per
unit tissue. The receiver operator characteristic curves indicated that the
clomiphene citrate challenge test was the most accurate of the three tests
assessed. In conclusion, none of the tests in this study accurately reflec
ts ovarian reserve.