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Testosterone Replacement, Low T, HCG, & Beyond
Testosterone Basics & Questions
Help with Labs
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<blockquote data-quote="madman" data-source="post: 184034" data-attributes="member: 13851"><p>Unfortunately, when it comes to the reference ranges for measured or calculated FT they vary between different labs, and as of now, there is no standardization let alone a harmonized reference range.</p><p></p><p>Efforts are underway to standardize the procedures for FT and to generate harmonized reference ranges. </p><p></p><p>Most men do well having FT in the 20-30 ng/dL range.</p><p></p><p>Others may run slightly higher levels.</p><p></p><p>Many tend to feel better with TT/FT levels on the higher end but again this is not set in stone as it comes down to the individual.</p><p></p><p>There are many individuals who tend to feel much better running average TT/FT levels.</p><p> </p><p></p><p></p><p></p><p>If we look at the reference range for your FT test which was done using an accurate testing method (ED) than 60.5 pg/mL would be under the mean 95.0 pg/mL RR (<span style="color: rgb(184, 49, 47)">35.0-155.0 pg/mL</span>) well off from the top end.</p><p></p><p></p><p>Here are the reference ranges for 2 of the most accurate FT assays from Labcorp:</p><p></p><p>Equilibrium Dialysis <span style="color: rgb(184, 49, 47)">52−280 pg/mL</span></p><p></p><p>[URL unfurl="true"]https://www.labcorp.com/tests/500726/testosterone-free-mass-spectrometry-equilibrium-dialysis-endocrine-sciences[/URL]</p><p></p><p>Equilibrium Ultrafiltration <span style="color: rgb(184, 49, 47)">5.00−21.00 </span></p><p></p><p>[URL unfurl="true"]https://www.labcorp.com/tests/070038/testosterone-free-equilibrium-ultrafiltration-with-total-testosterone-lc-ms-ms[/URL]</p><p></p><p></p><p></p><p></p><p>I would prefer the reference range that Labcorp uses for their ED FT assay <span style="color: rgb(184, 49, 47)">52−280 pg/mL.</span></p><p></p><p>Personally I would want my FT to be close to the top end or slightly higher of the reference range.</p><p></p><p></p><p></p><p>Again keep in mind that the goal of trt is to relieve/improve low-t symptoms and the overall well-being of the patient while at the same time avoiding/minimizing any potential side-effects while keeping blood markers in a healthy range (long-term).</p><p></p><p></p><p>You are most likely not familiar with the name Abraham Morgentaler who would be considered a pioneer in the field of testosterone replacement and is a highly respected Urologist who has made a huge contribution to men's health and hormones.</p><p></p><p>He has published over 200 articles in various journals.</p><p></p><p>If a man had symptoms with FT level of less than 100 pg/mL he would consider them a candidate for treatment.</p></blockquote><p></p>
[QUOTE="madman, post: 184034, member: 13851"] Unfortunately, when it comes to the reference ranges for measured or calculated FT they vary between different labs, and as of now, there is no standardization let alone a harmonized reference range. Efforts are underway to standardize the procedures for FT and to generate harmonized reference ranges. Most men do well having FT in the 20-30 ng/dL range. Others may run slightly higher levels. Many tend to feel better with TT/FT levels on the higher end but again this is not set in stone as it comes down to the individual. There are many individuals who tend to feel much better running average TT/FT levels. If we look at the reference range for your FT test which was done using an accurate testing method (ED) than 60.5 pg/mL would be under the mean 95.0 pg/mL RR ([COLOR=rgb(184, 49, 47)]35.0-155.0 pg/mL[/COLOR]) well off from the top end. Here are the reference ranges for 2 of the most accurate FT assays from Labcorp: Equilibrium Dialysis [COLOR=rgb(184, 49, 47)]52−280 pg/mL[/COLOR] [URL unfurl="true"]https://www.labcorp.com/tests/500726/testosterone-free-mass-spectrometry-equilibrium-dialysis-endocrine-sciences[/URL] Equilibrium Ultrafiltration [COLOR=rgb(184, 49, 47)]5.00−21.00 [/COLOR] [URL unfurl="true"]https://www.labcorp.com/tests/070038/testosterone-free-equilibrium-ultrafiltration-with-total-testosterone-lc-ms-ms[/URL] I would prefer the reference range that Labcorp uses for their ED FT assay [COLOR=rgb(184, 49, 47)]52−280 pg/mL.[/COLOR] Personally I would want my FT to be close to the top end or slightly higher of the reference range. Again keep in mind that the goal of trt is to relieve/improve low-t symptoms and the overall well-being of the patient while at the same time avoiding/minimizing any potential side-effects while keeping blood markers in a healthy range (long-term). You are most likely not familiar with the name Abraham Morgentaler who would be considered a pioneer in the field of testosterone replacement and is a highly respected Urologist who has made a huge contribution to men's health and hormones. He has published over 200 articles in various journals. If a man had symptoms with FT level of less than 100 pg/mL he would consider them a candidate for treatment. [/QUOTE]
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