Table 6

Cord blood estrogen levels reported in literature

Authors (Ref.)No. of subjectsHormone measuredMean ± SDa
Maccoby et al. (19) 53 females (first born)Estrone2572 ± 1321 ng/dl
Estradiol753 ± 389 ng/dl
 65 females (later born)Estrone2251 ± 1090 ng/dl
Estradiol629 ± 387 ng/dl
Francis et al. (20) 67 femalesEstroneAll subjects, >571.2 ng/dlb
Herruzo et al. (21) 25 femalesEstradiol177.5 ± 44.1 ng/dl
Simmons et al. (22) 63 femalesEstradiol584.8 ± 364.5 ng/dl
SHBG44.1 ± 6.3 nmol/liter
Simmons (23)125 (female:male ratio = 1:1)Estradiol633.5 ± 353.6 ng/dl
SHBG44.0 ± 6.5 nmol/liter
Shibata et al. (this study) 25 femalesEstrone3894.9 ± 2180.5 ng/dl
Estradiol1570.7 ± 824.8 ng/dl
SHBG44.4 ± 14.1 nmol/liter
  • a SD as a measure of spread among babies with a single measurement per baby. Units of compounds measured have been converted from those used in original reports to what were used in this study for the ease of comparison.

  • b Mean value was not shown.