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Testosterone Replacement, Low T, HCG, & Beyond
Testosterone Basics & Questions
Dr Saya: Relative concentrations of various hormones in the body
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<blockquote data-quote="Dr Justin Saya MD" data-source="post: 62124" data-attributes="member: 12687"><p>Different calibrations and measurement from different labs...most notably LabCorp vs Quest. </p><p></p><p>If you look at LabCorp free T reference ranges (vary as they're age adjusted), general range is ~10-30 pg/mL (again varies by age). Whereas Quest free T range can go into the hundreds with same units (i.e. 35 - 155 pg/mL). This is certainly an oddity, but a scenario where you have to assess WHERE you are with RESPECT to the respective reference range and also take SHBG levels into account for calibration purposes. </p><p></p><p>The above labs are for LABCORP measurements/ranges.</p></blockquote><p></p>
[QUOTE="Dr Justin Saya MD, post: 62124, member: 12687"] Different calibrations and measurement from different labs...most notably LabCorp vs Quest. If you look at LabCorp free T reference ranges (vary as they're age adjusted), general range is ~10-30 pg/mL (again varies by age). Whereas Quest free T range can go into the hundreds with same units (i.e. 35 - 155 pg/mL). This is certainly an oddity, but a scenario where you have to assess WHERE you are with RESPECT to the respective reference range and also take SHBG levels into account for calibration purposes. The above labs are for LABCORP measurements/ranges. [/QUOTE]
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Testosterone Replacement, Low T, HCG, & Beyond
Testosterone Basics & Questions
Dr Saya: Relative concentrations of various hormones in the body
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