Although having an extremely high SHBG would result in low FT levels if one had an average TT say of 600 ng/dL.....seeing as your TT is on the higher end 899 ng/dL.....even with an extremely high SHBG of 96 nmol/L your FT levels are by no means low!
As an example if your TT was only 600 ng/dL (average for most healthy young men).....with an extremely high SHBG of 96 nmol/L and Albumin 4.3 g/dL (mean).....than your FT would be LOW 14.24 ng/dL (below the reference range of 16-31 ng/dL).
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The only way to truly know where your FT levels sit is to have testing done using the most accurate methods such as the gold standard Equilibrium Dialysis or Ultrafiltration or simply use the newer TruT calculated method which has been shown to be on par with results obtained by the gold standard Equilibrium Dialysis.
It is available online for free to the general public.
Using the newer calculated method if we take your TT 899 ng/dL, SHBG 96 nmol/L, Albumin 4.9 g/dL than your
FT is 22.14 ng/dL(slightly under the mean of 23.5 ng/dL which would be just under mid-range of the reference range of 16-31 ng/dL).
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So believe it or not even with an extremely high SHBG of 96 nmol/L your FT is just under mid-range.....due to your high TT 899 ng/dL.
Now does that mean your levels are optimal or that there is no way you would experience low-t symptoms at such level.....doubtful!
You may very well need to have your FT levels in the upper end/slightly above the top end of the reference range as most men do well having FT levels in the 30-30+ ng/dL range.
What is critical is you also look into thyroid/adrenals as dysfunction in these areas can also mimic low-t symptoms such as low energy levels/ negative effects on mood/low libido/erectile dysfunction.
Also understand causes of low libido/ED are multifactorial and men with descent testosterone levels can still experience such issues.