The lack of a visible fetus on vaginal ultrasound after the βhCG levels have reached 1500 mIU/ml is strongly indicative of an ectopic pregnancy.
A falta dun feto visible nunha ecografía vaxinal despois de que os niveis de β-hCG chegaran a 1500 mIU/ml é un forte indicador dun embarazo ectópico.