Surasak TaneepanichskulSanya PatrachaiMahidol University2018-07-042018-07-041998-12-01Journal of the Medical Association of Thailand. Vol.81, No.12 (1998), 943-946012522082-s2.0-0040811029https://repository.li.mahidol.ac.th/handle/123456789/18446The aims of this study were to evaluate the serum estradiol level and the estrogenic activity in long-term DMPA users. From 1st January 1996 to 31st December 1996, fifty healthy women receiving DMPA for contraception for more than 36 months were recruited to the study. From the study, it was found that the mean duration of DMPA use was 59.1±30.7 months, the mean serum estradiol was 52.7±15.1 pg/ml and these women did not have problems of estrogen deficiency. This study revealed that long-term treatment with DMPA should not have any adverse effects on estrogenic activity.Mahidol UniversityMedicineArticleSCOPUS