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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="Nelson Vergel" data-source="post: 188269" data-attributes="member: 3"><p>Free T is always higher than E2. Why? 2 percent or more of total T is usually free T. Only 0.4% of total T aromatizes to estradiol.</p><p></p><p>The units used by LabCorp for free T are wrong (Quest uses the right units). For example from the results posted above by [USER=13404]@johndoesmith[/USER] , total T of 914 ng/dl multiplied by 0.02= 18.34 nd/dL, or 183.4 pg/mL. His free T with LabCorp is showing 20.6 pg/mL when it should be 206 pg/mL. His sensitive estradiol is 29.1 pg/mL.</p><p></p><p>I have explained this before. Dr. Saya is aware of this issue. LabCorp has been notified but never cared to change this.</p><p></p><p>AI's have no influence on free T. T dose is related to higher or lower SHBG. The higher the T dose, the lower the SHBG and the higher the free T. But, obviously, higher T doses also increase hematocrit and decrease good cholesterol(HDL) more. So, it is a balancing act.</p></blockquote><p></p>
[QUOTE="Nelson Vergel, post: 188269, member: 3"] Free T is always higher than E2. Why? 2 percent or more of total T is usually free T. Only 0.4% of total T aromatizes to estradiol. The units used by LabCorp for free T are wrong (Quest uses the right units). For example from the results posted above by [USER=13404]@johndoesmith[/USER] , total T of 914 ng/dl multiplied by 0.02= 18.34 nd/dL, or 183.4 pg/mL. His free T with LabCorp is showing 20.6 pg/mL when it should be 206 pg/mL. His sensitive estradiol is 29.1 pg/mL. I have explained this before. Dr. Saya is aware of this issue. LabCorp has been notified but never cared to change this. AI's have no influence on free T. T dose is related to higher or lower SHBG. The higher the T dose, the lower the SHBG and the higher the free T. But, obviously, higher T doses also increase hematocrit and decrease good cholesterol(HDL) more. So, it is a balancing act. [/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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