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Testosterone Replacement, Low T, HCG, & Beyond
Blood Test Discussion
Choose Quest or Labcorp?
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<blockquote data-quote="madman" data-source="post: 220581" data-attributes="member: 13851"><p>Comes down to the assay (most accurate).</p><p></p><p>You want TT/estradiol (LC-MS/MS), Free Testosterone (Equilibrium Dialysis, or Equilibrium Ultrafiltration).</p><p></p><p>The best bet especially when it comes to accuracy/comparing blood work then choose a lab/assay (most accurate) that is certified by the CDC's HoSt Program.</p><p></p><p><strong><em>* the participating assays are bench-marked to a higher-order reference method and calibrator</em></strong></p><p></p><p>TT (Labcorp/Quest Diagnostics), estradiol (Labcorp) as Quest is not certified by the CDC's HoSt Program.</p><p></p><p>Free Testosterone (Labcorp/Quest) and soon enough such lab/assays (ED/UF) will be certified by the CDC's HoSt Program.</p><p></p><p></p><p>[URL unfurl="true"]https://www.excelmale.com/forum/threads/cdc-standardized-total-t-and-estradiol-tests-and-soon-to-be-free-testosterone.17329/[/URL]</p><p></p><p><em><strong>*Assays that are <u>standardized are designed to provide accurate results, traceable to </u></strong></em><strong><em><u>“true” value-assigned certified reference materials and gold-standard reference methods</u>. Results obtained using standardized methods can be compared across assays, institutions, populations, and past and future test results, thereby improving diagnosis, treatment, and outcomes of patients</em></strong></p><p><strong><em></em></strong></p><p><strong><em><strong><em>* Limitations of using free testosterone by equilibrium dialysis and calculated free testosterone concentrations in practice are the lack of assay standardization, an accuracy-based quality control program, and a harmonized reference range. <u>Until these limitations are addressed, free testosterone by equilibrium dialysis and calculated free testosterone should use reference ranges established by individual laboratories or their specific assay method</u></em></strong></em></strong></p><p></p><p></p><p></p><p>For the time being, choose whatever lab suits your fancy!</p></blockquote><p></p>
[QUOTE="madman, post: 220581, member: 13851"] Comes down to the assay (most accurate). You want TT/estradiol (LC-MS/MS), Free Testosterone (Equilibrium Dialysis, or Equilibrium Ultrafiltration). The best bet especially when it comes to accuracy/comparing blood work then choose a lab/assay (most accurate) that is certified by the CDC's HoSt Program. [B][I]* the participating assays are bench-marked to a higher-order reference method and calibrator[/I][/B] TT (Labcorp/Quest Diagnostics), estradiol (Labcorp) as Quest is not certified by the CDC's HoSt Program. Free Testosterone (Labcorp/Quest) and soon enough such lab/assays (ED/UF) will be certified by the CDC's HoSt Program. [URL unfurl="true"]https://www.excelmale.com/forum/threads/cdc-standardized-total-t-and-estradiol-tests-and-soon-to-be-free-testosterone.17329/[/URL] [I][B]*Assays that are [U]standardized are designed to provide accurate results, traceable to [/U][/B][/I][B][I][U]“true” value-assigned certified reference materials and gold-standard reference methods[/U]. Results obtained using standardized methods can be compared across assays, institutions, populations, and past and future test results, thereby improving diagnosis, treatment, and outcomes of patients [B][I]* Limitations of using free testosterone by equilibrium dialysis and calculated free testosterone concentrations in practice are the lack of assay standardization, an accuracy-based quality control program, and a harmonized reference range. [U]Until these limitations are addressed, free testosterone by equilibrium dialysis and calculated free testosterone should use reference ranges established by individual laboratories or their specific assay method[/U][/I][/B][/I][/B] For the time being, choose whatever lab suits your fancy! [/QUOTE]
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Testosterone Replacement, Low T, HCG, & Beyond
Blood Test Discussion
Choose Quest or Labcorp?
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