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During the reproductive years of human females, levels of estradiol are somewhat higher than that of estrone, except during the early follicular phase of the menstrual cycle; thus, estradiol may be considered the predominant estrogen during human female reproductive years in terms of absolute serum levels and estrogenic activity.
Blood for the test must be taken in the morning hours, when levels are highest, as levels can drop by as much as 13% during the day and all normal reference ranges are based on morning levels. [9] [10] Normal total testosterone levels depend on the man's age but generally range from 240 to 950 ng/dL (nanograms per deciliter) or 8.3–32.9 nmol ...
Declining testosterone levels and an increase in the level of subcutaneous fatty tissue seen as part of the normal aging process can lead to gynecomastia in older males. Increased fatty tissue, a major site of aromatase activity, leads to increased conversion of androgenic hormones such as testosterone to estrogens. [ 26 ]
Similarly, a “normal” estrogen level ranges from 30 to 300, and there’s no data that says being closer to 30 or closer to 300 is better for you because every person reacts differently to ...
High estrogen is typically defined as “levels exceeding the normal range” for a specific age and menstrual phase, often accompanied by other symptoms (more on this soon), she says ...
What's more, estrogen (which remember is a byproduct of T in men), stops osteoclast activity. If your T is low, your estrogen levels will also be low, and you'll have decreased bone density. 13.
Quantitatively, estrogens circulate at lower levels than androgens in both men and women. [6] While estrogen levels are significantly lower in males than in females, estrogens nevertheless have important physiological roles in males. [7] Like all steroid hormones, estrogens readily diffuse across the cell membrane.
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