Intracytoplasmic Sperm Injection (ICSI)

ICSI is now one of the most widely used techniques in IVF worldwide, and it represents a major advance in treating male factor infertility. In conventional IVF, sperm and eggs are placed together and fertilisation occurs naturally in the laboratory. In ICSI, a single healthy sperm is selected and injected directly into the egg using a microscopic needle.

This approach is particularly beneficial for men with low sperm count, poor sperm motility, abnormal sperm morphology, or cases where sperm must be surgically retrieved (using procedures such as TESA or PESA). ICSI has significantly improved fertilisation rates for couples where male infertility was previously a major barrier to success.

Preimplantation Genetic Testing (PGT)

Preimplantation genetic testing allows embryos to be screened for chromosomal abnormalities or specific genetic conditions before they are transferred to the uterus. There are two primary forms:

• PGT-A (Preimplantation Genetic Testing for Aneuploidies): Screens embryos for the correct number of chromosomes. Chromosomally normal (euploid) embryos are more likely to implant successfully and less likely to result in miscarriage. PGT-A is particularly relevant for women over 35, those with recurrent implantation failure, or couples with a history of pregnancy loss.
• PGT-M (Preimplantation Genetic Testing for Monogenic Disorders): Used when one or both partners carry a known genetic condition — such as thalassaemia, sickle cell disease, or cystic fibrosis — to screen embryos before transfer and reduce the risk of passing the condition to a child.

Time-Lapse Embryo Monitoring

Traditional embryo culture involves removing embryos from the incubator periodically to assess their development under a microscope. Time-lapse imaging systems allow continuous, uninterrupted observation of embryo development through a built-in camera, without disturbing the stable incubator environment.

This technology generates detailed developmental data that helps embryologists select the embryo with the highest implantation potential — improving the precision of embryo selection without compromising embryo quality through unnecessary disturbance.

Vitrification — Advanced Embryo and Egg Freezing

Vitrification is a rapid freezing technique that has transformed the field of fertility preservation. Unlike older, slower freezing methods that could damage cells through ice crystal formation, vitrification cools biological material so rapidly that ice crystals do not form. Survival rates for vitrified eggs and embryos are now consistently high, making egg freezing a clinically reliable option.

Vitrification is used in:

• Fertility preservation for women facing cancer treatment or other medical interventions that may affect ovarian function
• Elective egg freezing for women who wish to preserve their fertility for personal reasons
• Embryo banking — the storage of excess embryos from an IVF cycle for future frozen embryo transfers
• Donor egg programmes

Endometrial Receptivity Testing

Even when a high-quality embryo is available, implantation failure can occur if the uterine lining (endometrium) is not in its optimal receptive state at the time of transfer. Endometrial receptivity testing analyses the endometrial lining at a molecular level to identify the individual’s personal implantation window — the narrow period when the endometrium is most receptive to an embryo.

This test is particularly valuable for women who have experienced repeated implantation failure despite good embryo quality.

Laser-Assisted Hatching

Before an embryo can implant in the uterine lining, it must break free from its outer shell (the zona pellucida) — a process called hatching. In some embryos, particularly those with a thicker or harder shell, this process may be impaired. Laser-assisted hatching uses a precise, controlled laser to create a small opening in the zona pellucida, potentially facilitating implantation.

This technique is used selectively, based on individual embryo characteristics and clinical history, rather than as a routine procedure.