I have found that shallow IM with the 27g x 5/8 works well. The Mrs gives it in the upper glute bc I can't reach it anymore. She does hers in the same place. Used to do sc abs but there was swelling under the skin and some bruising. As Dr Eric Serrano once told me, as long as you stick with the same protocol consistently, don't worry about blood levels it will work out. The TU would produce higher T levels at steady state, but less spikes following an inj, thus less erythrocytosis peak E2 and DHT. I met with an orthopedic surgeon yesterday (need an rTSA on my left) but we ended up on the topic of HRT, he uses TC 100 mg/5days. His HCT is about 55%, has no issues been there for years. He's 63. So much of this is individual, you have to do what works for you. Switch up, journal everything and then decide if it works for you.