Objectives: Assessment of the applicability of estimated
serum inhibin A (INHA) and/or INHB versus estradiol
(E2) levels to determine the triggering time during
controlled ovarian stimulation (COS) that might allow the
retrieval of the optimal number of oocytes.
Patients: 196 infertile women assigned to receive COS
for ELISA estimation of serum levels of E2 and INHs on
day-2 of the cycle and on the day of retrieval depending
on having serum E2 levels >2000 pg/ml and the optimal
The study outcome is the blinded distinguishing ability
of estimated serum levels of E2 and INHs between cases
that might have 2000
differentiation between patients according to the number
of mature follicles compared to serum E2 and INHB
differentiating patients had 14 mature follicles,
while E2 and INHB failed for this respect. Statistical
for canceling depending on the maturation of a low
number of follicles after COS and for the presence of 14-
15 mature follicles and deciding triggering and oocyte
retrieval.