Hi Southpaw41,
Which of your symptoms remain at this time, and how long have you had them? Certainly mono can cause profound fatigue, and it may take quite some time for that fatigue to go away. Your TSH is borderline high (some doctors choose to treat hypothyroidism when TSH is above 2.0), which also could contribute to your fatigue.
The part of your blood work that really caught my eye was your free T : DHT ratio. This is definitely not typical. There are usually only two causes for this: 5-alpha reductase deficiency or androgen insensitivity. Both of these disorders typically have a very extreme presentation, so doctors don't usually look for the more subtle manifestations.
Mild androgen insensitivity syndrome can present with no abnormalities except impaired fertility and / or decreased body hair. Sometimes, mild gynecomastia that doesn't resolve after puberty is seen. People with mild androgen insensitivity can go their whole lives without knowing they have the disorder; it is usually only detected during fertility testing (see [ame="http://en.wikipedia.org/wiki/Mild_androgen_insensitivity_syndrome"]Mild androgen insensitivity syndrome - Wikipedia, the free encyclopedia@@AMEPARAM@@/wiki/File:Androgen_receptor_3-d_model.jpg" class="image"><img alt="" src="http://upload.wikimedia.org/wikipedia/commons/1/10/Androgen_receptor_3-d_model.jpg"@@AMEPARAM@@commons/1/10/Androgen_receptor_3-d_model.jpg[/ame]).
I'm bringing this up to you because a lot of your symptoms are consistent with low androgen levels (brain fog, fatigue, low libido, impotence, impaired glucose tolerance). Some men with mild AIS experience these symptoms, despite having normal or elevated levels of T.
Unfortunately, the only way to test for this disorder is genetically: the androgen receptor gene is sequenced and analyzed for mutations.
I'm in my 30s, and had symptoms similar to yours: brain fog and fatigue (which worsened after eating), and a mildly elevated a1c (5.7). My T was elevated (total T was 1200 to 1400), and my T to DHT ratio was similar to yours (I too had decreased body hair / facial hair). I didn't have any problems with libido or erections, although I did have terrible daily headaches and trouble sleeping. My doctors dismissed my androgen values, and suspected an adrenal disorder, just like you (I shit you not). My TSH was in the 3.0-4.0 range, so I was treated for hypothyroidism, which actually did help to some extent.
After a few years of not really getting anywhere, I started researching different possibilities and came up with mild AIS. No one even gave me the time of day when I brought this up. Logically, I knew that there was no better explanation for my impaired T : DHT ratio, so I insisted upon getting the genetic test, even if I had to pay for it out of pocket. It came back positive.
Since then, I've been on a few different HRT products. I eventually settled on Testim, and am very happy with the results. My headaches and fatigue vanished overnight.
Since Testim is applied over a large area of the skin, and skin contains 5-alpha reductase, a significant portion of the T is converted into DHT. This will bring your DHT levels up to the normal range (or better), and may take care of your energy problems. You will have to be careful to get the correct dosage --- too much will suppress your hypothalamic-pituitary-gonadal axis, and will shrink your testicles. This won't happen overnight, so you'll have time to adjust your dosage and get it right.
Good luck, and keep us updated.