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Testosterone Replacement, Low T, HCG, & Beyond
Testosterone Basics & Questions
How much testosterone is converted to estradiol?
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<blockquote data-quote="johndoesmith" data-source="post: 53375" data-attributes="member: 13404"><p>I've seen a few numbers thrown around. From "0.2%" to "0.3%", now does that mean a fraction of a percent or does it mean 1/3rd of all test is converted to E2?</p><p></p><p style="margin-left: 20px">The conversion rate of testosterone to estradiol is around 0.2%. Up to 80% of plasma estradiol originates from aromatization of testosterone and androstenedione, mainly in (sc) fat and striated muscle, although aromatase activity is present in many other tissues, including bone and the brain; no more than 20% of estradiol in the circulation is secreted by the testes. Estradiol serum concentration in the adult male is around 20 to 30 pg/ml (70 to 110 pmol/liter), with a production rate of around 45 g/d.</p> <p style="margin-left: 20px"></p> <p style="margin-left: 20px"></p><p><span style="font-family: 'Verdana'"><a href="http://www.discountedlabs.com/blog/management-of-estradiol-in-men-what-do-studies-show/" target="_blank">Management of Estradiol in Men- What Do Studies Show? | Discounted Labs</a></span></p><p></p><p style="margin-left: 20px">and the transfer constant, BBTE2, for testosterone conversion to estradiol is 0.39% in males and 0.15% in female</p> <p style="margin-left: 20px"></p><p><span style="font-family: 'Verdana'"><a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC297476/" target="_blank">Conversion of blood androgens to estrogens in normal adult men and women</a></span></p><p></p><p><span style="font-family: 'Verdana'">What confuses me is they write it like "0.39%" but then use "4.5%" in other contexts.</span></p><p></p><p><span style="font-family: 'Verdana'">Maybe Dr saya could clear this up or it could just be a misunderstanding of math on my part.</span></p></blockquote><p></p>
[QUOTE="johndoesmith, post: 53375, member: 13404"] I've seen a few numbers thrown around. From "0.2%" to "0.3%", now does that mean a fraction of a percent or does it mean 1/3rd of all test is converted to E2? [INDENT]The conversion rate of testosterone to estradiol is around 0.2%. Up to 80% of plasma estradiol originates from aromatization of testosterone and androstenedione, mainly in (sc) fat and striated muscle, although aromatase activity is present in many other tissues, including bone and the brain; no more than 20% of estradiol in the circulation is secreted by the testes. Estradiol serum concentration in the adult male is around 20 to 30 pg/ml (70 to 110 pmol/liter), with a production rate of around 45 g/d.[/INDENT] [INDENT][/INDENT] [INDENT][/INDENT] [FONT=Verdana][URL="http://www.discountedlabs.com/blog/management-of-estradiol-in-men-what-do-studies-show/"]Management of Estradiol in Men- What Do Studies Show? | Discounted Labs[/URL][/FONT] [INDENT]and the transfer constant, BBTE2, for testosterone conversion to estradiol is 0.39% in males and 0.15% in female[/INDENT] [INDENT][/INDENT] [FONT=Verdana][URL="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC297476/"]Conversion of blood androgens to estrogens in normal adult men and women[/URL][/FONT] [FONT=Verdana]What confuses me is they write it like "0.39%" but then use "4.5%" in other contexts.[/FONT] [FONT=Verdana]Maybe Dr saya could clear this up or it could just be a misunderstanding of math on my part.[/FONT] [/QUOTE]
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Testosterone Replacement, Low T, HCG, & Beyond
Testosterone Basics & Questions
How much testosterone is converted to estradiol?
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