Screening is a way of checking apparently healthy people using a test to identify those who may be at increased risk of a disease or condition. They can then be offered information, further tests and treatment to reduce their risk and/or any complications arising from the disease or condition. Screening has a great role to play in obstetrics and gynecology to reduce morbidity and mortality both in the woman and the fetus. Keeping this in mind, this book has been brought out.