Correlation of birth weights with umbilical cord serum LH-hCG, FSH, beta-hCG, Estradiol, Cortisol and Testosterone levels.

Luteinizing hormone-human chorionic gonadotropin (LH-hCG), follicle-stimulating hormone(FSH), beta-human chorionic gonadotropin (beta-hCG), estradiol, cortisol and testosterone levels were determined in cord venous serum and the correlation of birth weights with those hormone levels was investigated in 32 male and 35 female fetuses. There were significant negative correlations between LH-hCG or FSH levels and birth weights in the male fetus. Also there was a significant positive correlation between LH-hCG levels and birth weights in the female fetus. This data suggests that there is a sex difference during the development of the pituitary-gonadal axis.