What to Log at Every Injection
Protocol logs labs alongside injection history — one view, full protocol context
The minimum injection log for TRT: date and time, dose in mg, ester type (Cypionate, Enanthate, Propionate, etc.), and injection site. These four data points establish the context for every bloodwork result you'll ever test while on that protocol. Without knowing the exact dose and ester, a Total T result on a lab report is an isolated number with no actionable meaning.
Ester type is often overlooked. Testosterone Cypionate (half-life ~8 days) and Testosterone Propionate (half-life ~2 days) have completely different half-lives that determine when to test for representative steady-state levels. A tracker that logs "testosterone" without the ester is missing the pharmacokinetically critical variable. Protocol logs ester type for every injection and includes the TRT ester calculator that converts labeled dose to actual testosterone content.
When and How to Use the Bloodwork Log
Log your bloodwork results immediately when you receive them — not days later, not after you've discussed them with your prescriber. Record the exact protocol you're running at the time of the draw: dose, ester, injection frequency, and weeks on that protocol. The value of bloodwork data compounds over time as you build multiple draws across multiple protocol states.
At minimum, log Total T, Free T, Estradiol (sensitive assay), and Hematocrit at every quarterly draw. Log SHBG, PSA, Hemoglobin, and full CBC/CMP at your initial baseline and annually thereafter. The full bloodwork reference is at trt-bloodwork-guide.
