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Test Overview. An estrogen test measures the level of the most important estrogen hormones in a blood or urine sample. It measures estradiol, estriol, and estrone. Estradiol is the most common type of estrogen measured for nonpregnant women. The amount of estradiol in a woman's blood varies throughout her menstrual cycle.
Estrogen Levels. There are three type of estrogen: estrone, estradiol and estriol. The levels of each type of estrogen present, varies at different times in a woman's life. Estradiol is about 80 times more active than estriol.At BodyLogicMD, we can test for each of the different types of estrogen using blood and saliva tests.erum estrogen levels can be helpful in the initial stages of treatment when your physician is determining the need for hormone therapy. Serum testing is the best monitor of estradiol levels when you are being treated with a natural bioidentical estrogen patch, pellet or gel.