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Testosterone Replacement, Low T, HCG, & Beyond
Blood Test Discussion
Total, free, SHBG - endogenous
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<blockquote data-quote="madman" data-source="post: 243606" data-attributes="member: 13851"><p>As I have stated in previous threads the CDC is working hard behind the scenes on harmonized/standardization of free testosterone.</p><p></p><p>Until this happens it is critical when comparing labs whether TT, FT, or estradiol that you need to use the same lab and the same assays (most accurate), TT/estradiol (LC/MS-MS) and FT (Equilibrium Dialysis or Ultrafiltration).</p><p></p><p>No one should be using/relying upon the known to be inaccurate FT direct immunoassay!</p></blockquote><p></p>
[QUOTE="madman, post: 243606, member: 13851"] As I have stated in previous threads the CDC is working hard behind the scenes on harmonized/standardization of free testosterone. Until this happens it is critical when comparing labs whether TT, FT, or estradiol that you need to use the same lab and the same assays (most accurate), TT/estradiol (LC/MS-MS) and FT (Equilibrium Dialysis or Ultrafiltration). No one should be using/relying upon the known to be inaccurate FT direct immunoassay! [/QUOTE]
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Testosterone Replacement, Low T, HCG, & Beyond
Blood Test Discussion
Total, free, SHBG - endogenous
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