All 11 Esters at a Glance: The Master Reference Table

This is the table to bookmark: every ester in the catalog with its half-life, active fraction, and clearance math, plus the tools that model it.

The master table

Compound	Est. half-life	Active fraction	≈ Time to 5% remaining
Trenbolone Acetate	≈ 2 days	87%	≈ 9 days
Testosterone Enanthate	≈ 4.5 days	72%	≈ 19 days
Drostanolone Propionate	≈ 4.5 days	84%	≈ 19 days
Testosterone Cypionate	≈ 8 days	70%	≈ 35 days
Methenolone Enanthate	≈ 10 days	73%	≈ 43 days
Boldenone Undecylenate	≈ 14 days	63%	≈ 60 days
Nandrolone Decanoate	≈ 15 days	64%	≈ 65 days
Stanozolol (oral)	≈ 0.5 days	100%	≈ 2 days
Oxandrolone (oral)	≈ 0.5 days	100%	≈ 2 days
Methandrostenolone (oral)	≈ 0.5 days	100%	≈ 2 days
Sustanon 250 (blend)	2–15 days	mixed	≈ 9+ weeks

Half-lives are population averages from published pharmacokinetic literature; individual variation is significant.

How to read the active fraction

The ester chain adds molecular weight on top of the parent hormone. A 250 mg injection of testosterone enanthate carries 72% active testosterone — about 180 mg — because the enanthate group makes up the rest. That’s why release models multiply dose by the active fraction before applying decay.

Tools for every row

• Curve modeling: the ester half-life plotter draws 12-week serum curves for any ester, including the Sustanon 250 four-ester breakdown.
• Clearance math: the ester clearance calculator computes the percentage remaining at any week count.
• Long-tail reads: how trenbolone acetate clears and why nandrolone decanoate lingers.

For the underlying first-order model, see the ester half-life guide.

For laboratory research use only. Not medical advice.