GnRH analogues are artificially synthesised molecules and administered as a medicine in women who will undergo a fertility treatment as in the case of artificial insemination, in vitro fertilisation or ICSI.
Its prescription is specially indicated in the following cases:
- Women with Polycystic Ovarian Syndrome (PCOS) and high blood plasma basal levels of LH.
- Women with Polycystic Ovarian Syndrome (PCOS) and an increased blood plasma androgen concentration.
- When it is intended to avoid premature peaks of luteinizing hormone (LH) in previous cycles which would cause the early luteinization of follicles and the production of poor quality oocytes.