What are the challenges and limitations of preimplantation genetic diagnosis (PGD)?

PGD, a technique that allows for the genetic testing of embryos before implantation, has several challenges and limitations, including:

• Cost: PGD can be expensive, making it inaccessible for many couples.
• Success rates: The success rates of PGD vary depending on the specific genetic condition being tested for.
• Ethical concerns: PGD raises ethical concerns, such as the potential for selective abortion and the creation of embryos for genetic testing.
• Availability: PGD may not be available in all areas or may be limited to certain genetic conditions.