What is testing a fetus for a genetic disorder called?

• A. Prenatal screening
• B. Foetal screening
• C. Preimplantation genetic testing
• D. Anomaly screening

Answer: (B)

Foetal screening is the process of checking the fetus during pregnancy for potential genetic disorders. It aims to estimate the risk of a condition so parents can decide on further testing or management. Noninvasive methods, like analyzing fetal DNA in the mother's blood or using ultrasound markers, are common first steps. If a higher risk is detected, invasive tests such as amniocentesis can provide a definitive diagnosis. Prenatal screening is a closely related term, since prenatal means before birth, but foetal screening specifically emphasizes testing the fetus. The other options are different contexts: preimplantation genetic testing is done on embryos before implantation in IVF, and anomaly screening focuses broadly on detecting birth defects, often via ultrasound.