Endometrial thickness and serum oestradiol concentrations as predictors of outcome in oocyte donation.

Adequate endometrial preparation with exogenous steroidsis mandatory for successful ovum donation. This study wasundertaken to assess the value of endometrial thickness byultrasound and serum oestradiol as predictors of ovumdonation outcome and to analyse the correlation betweenserum oestradiol concentrations and the endometrial thick-ness. Endometrial thickness and serum oestradiol concen-trations on the day of oocyte donation were recorded andcompared to several in-vitro fertilization parameters. Thecycles (n J 465) were classified according to serum oest-radiol values and endometrial thickness. Comparison ofthe groups showed that endometrial thickness was signi-ficantly (P J 0.002) higher when serum oestradiol was