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Given by subcutaneous injection in mice, estradiol is about 10-fold more potent than estrone and about 100-fold more potent than estriol. [ 46 ] [ 47 ] [ 48 ] As such, estradiol is the main estrogen in the body, although the roles of estrone and estriol as estrogens are said not to be negligible.
Trough estradiol levels and MADRS Tooltip Montgomery–Åsberg Depression Rating Scale scores with 1 mg sublingual micronized estradiol 3 to 8 times per day (3 to 8 mg/day total; mean 4.8 mg/day total) in women with postpartum depression. [8] Blood was drawn specifically in the mornings before the first dose of sublingual estradiol for the day. [8]
Estradiol level with a single 100 µg/day estradiol reservoir patch (Estraderm) with and without ethanol added in postmenopausal women. [9] [10] This patch has a 3- to 4-day duration and is designed for twice-weekly application. In one group, ethanol was injected into the area between the patch and the skin on day 3.
A higher dosage of estradiol gel containing 1.5 mg estradiol per daily application has been found to produce mean estradiol levels of 40 to 100 pg/mL and estrone levels of 90 pg/mL, while 3 mg per day has been found to result in respective mean estradiol and estrone levels of 60 to 140 pg/mL and 45 to 155 pg/mL. [15]
Mean estradiol levels during 1 to 8 mg/day oral estradiol therapy alone or in combination with 100 to 200 mg/day spironolactone in transgender women. [ 3 ] Percent change in estradiol (E2), estrone (E1), LH, and FSH levels over a 24-hour period following a single dose of 2 mg oral estradiol in women.
Target ranges for hormone levels in hormone therapy for transgender women; Source Place Estradiol, total Testosterone, total Refs Endocrine Society: United States: 100–200 pg/mL <50 ng/dL [1] World Professional Association for Transgender Health (WPATH) United States
1.15 0.99–1.34 1.32 1.10–1.58 ... estradiol is about 10-fold more potent than estrone ... much less expensive than other forms of estradiol such as ...
As such, E2S can indirectly serve as a positive effector of estrogen signaling. [15] Estradiol levels are about 1.5- to 4-fold higher than E2S levels in women. This is in contrast to E1S, the levels of which are about 10 to 15 times higher than those of estrone. [17]