Treatment of threatened and habitual abortion with human chorionic gonadotrophin. The role of serum human placental lactogen determination.

Treatment of habitual and threatened abortion with human chorionic gonadotrophin (HCG) is discussed. Two problems are encountered: the selection of patients for treatment; and the correct dosage of HCG. Determination of human placental lactogen (HPL) in the serum was used to select patients for treatment. The dosage of HCG was varied according to the response of the patient and as indicated by the levels of HPL in her serum.