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Testosterone Replacement, Low T, HCG, & Beyond
Blood Test Discussion
Far different reference ranges
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<blockquote data-quote="RickB" data-source="post: 242060" data-attributes="member: 42882"><p>I've been off trt for over three months and had blood work done at my urologist. They're using Roche now instead of LabCorp. One question comes up right away, and that's how the two estradiol methods differ. Because even though both labs use pg/mL, the reference ranges are drastically different.</p><p></p><p>LabCorp is 7.6 to 42.6</p><p>Roche is 41 to 91.9</p><p></p><p>I am sure that the methodology is the specific cause for the difference in reference ranges, rather than differing ideas about what range is normal. I have always had low estradiol without trt, around 6. Now with Roche I am still low at 19.5. I have little doubt that 6 at LC and 19.5 at Roche are roughly the same, but can anyone explain the difference in the testing?</p><p></p><p>(inb4 madman tells me it doesn't matter, because both assays are piss poor.)</p></blockquote><p></p>
[QUOTE="RickB, post: 242060, member: 42882"] I've been off trt for over three months and had blood work done at my urologist. They're using Roche now instead of LabCorp. One question comes up right away, and that's how the two estradiol methods differ. Because even though both labs use pg/mL, the reference ranges are drastically different. LabCorp is 7.6 to 42.6 Roche is 41 to 91.9 I am sure that the methodology is the specific cause for the difference in reference ranges, rather than differing ideas about what range is normal. I have always had low estradiol without trt, around 6. Now with Roche I am still low at 19.5. I have little doubt that 6 at LC and 19.5 at Roche are roughly the same, but can anyone explain the difference in the testing? (inb4 madman tells me it doesn't matter, because both assays are piss poor.) [/QUOTE]
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Testosterone Replacement, Low T, HCG, & Beyond
Blood Test Discussion
Far different reference ranges
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