Relaxin levels in ovum donation pregnancies

Fertil Steril. 1991 Jul;56(1):59-61.


Study objective: To investigate the relative contributions of the corpus luteum (CL) and the placenta to the circulating levels of relaxin during pregnancy.

Patients: Forty-one patients in whom pregnancy had been achieved by ovum donation.

Results: Relaxin was not detected in the serum of 36 patients; in the remaining 5, although it was detectable, the levels were markedly reduced when compared with those in normal pregnancies.

Conclusion: These results demonstrate that the CL is essential for the maintenance of normal circulating levels of relaxin during pregnancy.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Corpus Luteum / physiology*
  • Embryo Transfer*
  • Female
  • Humans
  • Ovarian Diseases / blood
  • Placenta / physiology
  • Pregnancy
  • Relaxin / blood*
  • Turner Syndrome / blood


  • Relaxin