So if he has a free test of 0 you are cool with it as long as he has a total in range?
There is no magic number for total test and it means very little when compared to free test for the actual "issues" of lethargy, tired, etc.
To the OP
The majority of testosterone is inactivated in the liver and excreted by the kidneys, approximately 4% is converted to dihydrotestosterone via a reductase enzyme and 0.2% to estradiol via the enzyme aromatase. Also at 100 cyp a week your natural production shut down around week 5-7 completely. So you bottomed out your E2, you are on too low of a dose to give you a satisfactory level without natural test production, and you have DHT higher than normal to your test level. You should feel like crap like now. The additional Cyp will stack at 14-21 days depending on your pin cycle. Once the new test level is reached you should feel much better.
Low test and no E2..miserable.
Low test with high E2...miserable
Good test and low E2....not as bad
When you build the estrogen back up and feel normal your Doc should make you do blood-work to see where your E2 and test stand. 50 on an E2 sensitive assay was not indicative of needing Adex IMHO. I just went through the whole starved test transition. Once it worked out it was great.
Total Test calculates your Estrogen Conversion.