Prenatal diagnosis refers to the process of identifying any potential health issues or abnormalities in a fetus before birth. This can involve various tests and screenings, such as genetic testing, ultrasounds, and blood tests, to assess the health and development of the fetus. Prenatal diagnosis is important for detecting conditions such as chromosomal abnormalities, genetic disorders, and birth defects, allowing for early intervention and appropriate medical care. It can help parents and healthcare providers make informed decisions about the pregnancy and plan for any necessary medical treatment for the baby after birth.