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Testosterone Replacement, Low T, HCG, & Beyond
Blood Test Discussion
Would love some input on lab results
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<blockquote data-quote="madman" data-source="post: 114011" data-attributes="member: 13851"><p>Regardless your free t is definitely low due to your higher SHBG and most need to have FT it in the 2-3 % range to feel optimal.</p><p></p><p>Even when one converts Canadian units for TT or free t to the US units and wants to compare Canadian vs US labs it is not accurate as the testing methods used by different labs for TT and free t are usually different and depending on the testing methods for TT and free t certain assays are more accurate than others.</p><p></p><p>Regarding Total Testosterone at most labs in Canada they use the automated immunoassay which is not as accurate as the liquid chromatography tandem-mass spectrometry (LC-MS/MS) which is used at certain labs in the US and Labcorp offers it which was used when you had your blood work done.</p><p></p><p>Regarding free testosterone at most labs in Canada they use the calculated free t as oppose to the direct or equilibrium dialysis which is offered at most US labs mind you calculated free t is also used.</p><p></p><p>Than to top it off lab reference ranges are different in Canada and the US and there is also variance in reference ranges between labs.</p><p></p><p>Two of the biggest labs in Ontario are Lifelabs and Dynacare and there is a difference between reference ranges for TT,FT,SHBG,E2 and so on.</p><p></p><p>Two of the biggest labs in the US are Labcorp and Quest and there is also a difference in reference ranges.</p><p></p><p>Sad fact of the matter is a lot of doctors in Canada are dead set on only looking at TT and not even concerned with ones free t let alone SHBG.</p></blockquote><p></p>
[QUOTE="madman, post: 114011, member: 13851"] Regardless your free t is definitely low due to your higher SHBG and most need to have FT it in the 2-3 % range to feel optimal. Even when one converts Canadian units for TT or free t to the US units and wants to compare Canadian vs US labs it is not accurate as the testing methods used by different labs for TT and free t are usually different and depending on the testing methods for TT and free t certain assays are more accurate than others. Regarding Total Testosterone at most labs in Canada they use the automated immunoassay which is not as accurate as the liquid chromatography tandem-mass spectrometry (LC-MS/MS) which is used at certain labs in the US and Labcorp offers it which was used when you had your blood work done. Regarding free testosterone at most labs in Canada they use the calculated free t as oppose to the direct or equilibrium dialysis which is offered at most US labs mind you calculated free t is also used. Than to top it off lab reference ranges are different in Canada and the US and there is also variance in reference ranges between labs. Two of the biggest labs in Ontario are Lifelabs and Dynacare and there is a difference between reference ranges for TT,FT,SHBG,E2 and so on. Two of the biggest labs in the US are Labcorp and Quest and there is also a difference in reference ranges. Sad fact of the matter is a lot of doctors in Canada are dead set on only looking at TT and not even concerned with ones free t let alone SHBG. [/QUOTE]
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Testosterone Replacement, Low T, HCG, & Beyond
Blood Test Discussion
Would love some input on lab results
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