Laser Assisted Hatching (LAH)

The human embryo in the early stages of its development is surrounded by a transparent glycoprotein outer shell, the zona pellucida, which fulfills protective functions.

The shell disappears in the process of fission, after about 5 to 7 days, which allows the embryo to be implanted into the inner mucosal tissue of the uterus - the endometrium. However, this process does not always occur as it should, which prevents the further development of pregnancy. This is the kind of problems that can be solved by laser assisted hatching. The procedure involves a highly focused infrared laser beam to remove the zona pellucida (outer shell) in the most precise way.

Laser assisted hatching increases the chances of successful embryo implantation and the further progress of pregnancy in case of proper artificial endometrial preparation.


Not every clinic can handle such a manipulation, so we recommend trusting our modern European Medical Center, which specializes in all types of ART.

Indications for LAH:

  • women over 38 years of age;
  • women who have failed 1 or more IVF cycles;
  • bad morphological indices of embryos (slow cell division rate, high cell fragmentation etc);
  • thickening or hardening of the embryo's shell and its other abnormalities;
  • elevated baseline level of follicular stimulating hormone (FSH) in the blood;
  • using embryos after cryopreservation (frozen embryos);
  • women who smoke.

Additional details on our partner’s website: https://parensfertility.com/