Ovarian Reserve (AMH) Test
Assisted hatching is a scientific technique used in In Vitro Fertilization, which improves implantation of embryos into woman’s uterine lining by creating an opening through which embryonic cells hatches out. Pregnancy doesn’t occur unless embryo hatches. Before embryo implantation, developing embryo must hatch out of its outer shell named as zona pellucida. Some embryos seem to have thicker shell that may decrease their ability to hatch and therefore reduce likelihood that they will implant. This may be due to age of woman or other, unknown reasons. The unfertilized egg is surrounded by zona pellucid. Zona pellucida allows only one sperm cell to enter and fertilizes egg. After fertilization, embryo begins to cleave into two, four and so on. Assisted hatching is performed on embryos at this early cleavage stage. Women aged >37 have tendency to produce oocytes with harder or thicker zona pellucida compared to younger women. Same applies to women with high level of follicle-stimulating hormone.