No. Circulating blood estradiol level after menopause is only ~10-20 pg/ml. This small quantity is actually not from the ovary, but rather a product of two conversion steps that happen in the body: androstenedione-->estrone-->estradiol.
According to this tradition, public administration became a. profession in the United States when government set standards of education, experience, and skill for the hiring, promotion, and discharge of public administrators (say, by the Civil Service Act of 1883).
This is reflected in the idea that the study of public administration is sufficiently important and sufficiently autonomous to become a science or discipline in itself. The conception of a more or less autonomous science or discipline called Public Administration is primarily, if not indeed uniquely, an American idea.