Half-life estimate, not bloodwork or dosing advice. Disclaimer.
The default long-ester comparison. About 72% parent hormone. Twice-weekly dosing is a common way to flatten peaks and troughs versus a single weekly pin.
The default row models 200 mg as an intramuscular dose, twice a week (e3.5d), for 12 weeks.
Also called Testosterone enanthate, Test Enanthate, Enanthate, Test E 250.
| Half-life | 4.5d |
|---|---|
| Time to peak | 2d |
| Parent hormone | 72% |
| Default dose | 200 mg |
| Default frequency | Twice a week (E3.5D) |
| Default duration | 12 weeks |
On that default row the model counts 24 doses. Steady state is about day 22.5. Washout runs to about day 24.5. In the last interval the peak is 346 mg and the trough is 274 mg, a swing of 21%.
About 72% of each milligram is parent hormone, so 100 mg of Testosterone enanthate leaves about 72.0 mg of Testosterone.
A half-life of 4.5d means a dose is still present at the next one, so the line climbs and then levels off.
Test C has a half-life of 5d against 4.5d on this page. Parent hormone is 69% there against 72% here.
Wiki first cycle — Test E 500 plots 250 mg twice a week (e3.5d) for 16 weeks. It is an illustration already in the app, not a protocol to follow.
Ester fraction ~0.72 from testosterone ester tables; half-life ~4.5 d from the steroidplot/Behre-era community PK set. How the model works.