Half-life estimate, not bloodwork or dosing advice. Disclaimer.
Short ester. About 80% parent hormone by weight. Levels rise and fall quickly, so daily or EOD dosing is the usual comparison against longer esters.
The default row models 50.0 mg as an intramuscular dose, daily (ed), for 12 weeks.
Also called Testosterone propionate, Test Prop, Propionate.
| Half-life | 0.8d |
|---|---|
| Time to peak | 1d |
| Parent hormone | 80% |
| Default dose | 50.0 mg |
| Default frequency | Daily (ED) |
| Default duration | 12 weeks |
On that default row the model counts 84 doses. Steady state is about day 4. Washout runs to about day 5. In the last interval the peak is 69.0 mg and the trough is 69.0 mg, a swing of 0%.
About 80% of each milligram is parent hormone, so 100 mg of Testosterone propionate leaves about 80.0 mg of Testosterone.
A half-life of 0.8d means each dose has mostly cleared before the next daily dose, so the line is a row of spikes.
Test E has a half-life of 4.5d against 0.8d on this page. Parent hormone is 72% there against 80% here.
Ester fraction from published testosterone ester tables; half-life ~0.8 d from the steroidplot/Behre-era community PK set. How the model works.