Labcorp has explained that their equipment reports a result that is 10x lower than actual. If I think about it later I’ll hunt down the release, but you can google it
I have seen docs explain that they’d rather use TT and SHBG to calculate FT rather than rely on the direct measurement since it’s so tricky
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Thanks, I got it.
Now here´s something I don´t understand. I´ll take my own example :
If I use the calculator for Free T, then, my Free T won´t be 23pg/ml (last lab result which is the same as 2,3ng/dl) but instead the caculator says it will be 7,14ng/dl (which converts to 71,4pg/dl)
Then, if I go back to the lab range for Free T in my regular blood tests, the range goes from 8,68pg/ml to 54,69pg/ml. Does this means I am above the range ?
On the other hand, my bioavaiable testosterone is only 173ng/dl in the calculator and Dr.google says above 18yrs of age it should range from 131 ng/dl to 682 ng/dl. And here It makes sense because I am low on T.
Something must not be right and perhaps it could be some of my calculations…
I shared the issue in above post but here’s more info and examples in case they are helpful to you. In short, it’s painful math/units/analytical chemistry details and not all “free T” assays are created equal.
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