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Testosterone Replacement, Low T, HCG, & Beyond
Blood Test Discussion
LabCorp Vs Quest free testosterone lab ranges: Why are they different?
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<blockquote data-quote="sammmy" data-source="post: 186048" data-attributes="member: 38594"><p>Highly doubtful statement that Quest will deliberately pick the middle of the normal curve as the top normal value. Any lab test will measure a parameter related to the free testosterone, not the absolute amount of free testosterone. That is why the range of values for free T that the test gets different and tests are not comparable between each other even in the same units, nor are comparable to online calculators.</p><p></p><p>To determine normal range of their test, what they do probably is get a random sample of men, obtain the values their test give for that sample and plot a histogram. Ideally it should be a normal distribution and then ''normal range'' could be defined as values within two standard deviations from the mean. If the sample was really normal and quite large, it is highly unlikely that it will get the upper normal value in the middle of the actual population curve.</p></blockquote><p></p>
[QUOTE="sammmy, post: 186048, member: 38594"] Highly doubtful statement that Quest will deliberately pick the middle of the normal curve as the top normal value. Any lab test will measure a parameter related to the free testosterone, not the absolute amount of free testosterone. That is why the range of values for free T that the test gets different and tests are not comparable between each other even in the same units, nor are comparable to online calculators. To determine normal range of their test, what they do probably is get a random sample of men, obtain the values their test give for that sample and plot a histogram. Ideally it should be a normal distribution and then ''normal range'' could be defined as values within two standard deviations from the mean. If the sample was really normal and quite large, it is highly unlikely that it will get the upper normal value in the middle of the actual population curve. [/QUOTE]
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Testosterone Replacement, Low T, HCG, & Beyond
Blood Test Discussion
LabCorp Vs Quest free testosterone lab ranges: Why are they different?
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