Medical Termination of Pregnancy (MToP) in the 1st trimester - the role of human chorionic gonadotropin and ultrasound in pregnancy diagnosis and MToP follow-up.

At pregnancy diagnosis, there is a positive and medium strong correlation between serum hCG and CRL. In MToP follow-up, a negative LSUP test enables reliable exclusion of ongoing pregnancy and missed abortion. In case of a positive LSUP test, US examination should be performed; however, surgical intervention should not be indicated solely on the basis of uterine cavity dilatation.