ß-hCG and prediction of therapeutic success in ectopic pregnancies treated with methotrexate, results from a prospective observational study.

Objective: To evaluate the diagnostic accuracy of different beta-human chorionic gonadotrophin (ß-hCG) levels measurement, for predicting success of medical treatment in cases diagnosed as tubal ectopic pregnancy (TEP).

Design: Five-year prospective observational study.

Setting: Prenatal Diagnosis Unit, Vall d'Hebron University Hospital - Barcelona.