Testosterone Injection Mistakes You Should Know

Three testosterone injection mistakes I see constantly: treating frequency as if one schedule fits every man, assuming subq is always smoother than IM, and making dose decisions on total T without ever measuring free T. Each one is the same theme — the standard advice isn't wrong for everyone, it's wrong for the man it's wrong for, and nobody is naming why. ━━━━━━━━━━━━━━━━━━━━━━━━━ 📱 TRT OPTIMIZATION APP — dose calculator, lab interpretation, red flags: https://www.swintegrativemedicine.com... 📘 MASTERING YOUR TRT (ebook — the complete protocol): https://discover-holistic-health-acad... ⭐ WORK WITH DR. TERRANELLA: https://www.swintegrativemedicine.com... ━━━━━━━━━━━━━━━━━━━━━━━━━ Two men can inject the exact same dose on the exact same schedule and four days later their blood looks completely different. The Ekström 2013 study showed a roughly ten-fold spread in serum testosterone peaks across real hypogonadal patients on identical testosterone undecanoate dosing. Genetics, body composition, liver clearance, binding-protein status, and dose history all explain why. There is no universal TRT protocol — only the one that fits the man in front of you. This video walks through the three injection mistakes I see most often and what I do instead: Mistake 1 — Treating frequency as universal and only drawing a trough. UGT2B17 glucuronidation polymorphisms (Schulze 2008) drive up to a 20× difference in testosterone clearance. SRD5A2, CYP19A1, and SULT2A1 add more individual variation. And steady state takes ~5 half-lives — so a man who just changed dose is not where the lab number suggests. Trough by itself is half the picture. You need a trough AND a mid-week peak to know the true curve. Mistake 2 — Assuming subq is meaningfully different from IM. Wilson 2018, Spratt 2017, and McFarland 2017 all show subq is effective and safe and delivers equivalent testosterone to IM with wide inter-patient variability either way. The Pastuszak subcutaneous enanthate auto-injector showed lower hematocrit and lower estradiol — but that's a specific product, specific ester, specific needle. The "much smoother" claim is overstated relative to what the head-to-head data actually shows. Mistake 3 — Making dose decisions on total T without ever measuring free T. Two men with identical total testosterone of 700 can have completely different free T depending on SHBG. SHBG of 15 vs SHBG of 60 puts free T in entirely different zones. Calculated free T (Vermeulen) is OK as a rough estimate, but for borderline numbers or for treatment decisions, the direct equilibrium dialysis / mass-spec free T is the call. Treating total T as the only number you measure leads to overdosed men with high SHBG and underdosed men with low SHBG — both feeling worse on the same protocol. 0:00 Introduction — Three Men, Same Drug, Different Outcomes 0:17 The Pattern Most Doctors Miss 1:35 Ekström 2013 — A 10× Spread on the Same Dose 1:51 No Universal TRT Protocol — Genetics, Body Comp, Clearance 2:03 Lead Magnet — TRT App, Ebook, Consult 2:19 Mistake 1: Treating Frequency as Universal 6:23 Mistake 2: Assuming Subq Is Meaningfully Different From IM 9:42 Mistake 3: Making Dose Decisions on Total T Without Free T 11:44 SHBG — Why Two Men With Identical Total T Feel Different 14:45 Watch This Next: Top Warning Signs Your TRT Dose Is Wrong #trt #testosteronereplacementtherapy #trtoptimization #lowtestosterone #mensthealth