Test U (Testosterone undecanoate) plotter

Long ester. About 63% parent hormone. Slow rise, heavy accumulation, and a long washout — useful for seeing how a long half-life changes the curve.

t½ 21dTmax 7d63% parentTestosteronemg

Also called Testosterone undecanoate, Aveed.

Compare with Test E, Test C, Test P.

Ester fraction ~0.63 from testosterone ester tables; injectable undecanoate half-life is commonly cited around 3 weeks.

Your cycle

Dose, ester, and frequency. The chart is remaining active amount, not serum concentration. To step a dose up, add another row of the same compound with a later start day.

Compound 1

t½ 21dTmax 7d63% parent

Dose (mg)

Frequency

Start day

Duration (weeks)

Per-compound linesTotal line

Peaks, troughs, and half-life

Estimated remaining active mg. Washout continues after the last dose. Mixed IU and mg protocols are not summed.

Testosterone undecanoate

Peak

1595 mg

Trough

1414 mg

Swing

11%

~Steady state

105d

~Washout

112d

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