Thank you for sharing this interesting information & data with us. I think I will do a similar experiment at some point as well. I notice no major difference between subQ and shallow IM, but I do think subQ takes longer to "kick in" (or it feels that way).
For me, the "direct" RIA free T tracks pretty well with my symptoms, much better than total testosterone or Tru-T. Vermeulen calculated free T tracks well too. I have recorded my symptom status daily in Nelson's TRT Analyzer app for the past couple of years.
I appreciate posts like this and I hope more people share similar. No one would assume this post is a comprehensive, definitive analysis of subQ versus IM - it is just someone providing some interesting information. There are many such posts on E2 changes with frequent injections, HCT, etc.
