Serum concentration from a single dose
single 100 mg dose over 1.3 days, vertical lines mark each half-life elapsed since the peak
Estimated. No published data backs these figures at all — the half-life is carried over from an older reference table and the level is uncalibrated. Read the shape of this curve, not its height, and do not compare its height with other compounds.
What the numbers mean
A 6 hour half-life, among the shortest modelled here, so timing across the day dominates the shape of the curve. Nothing in the source data covers this compound, so the level is uncalibrated and the curve shows shape only.
The active fraction is the share of each milligram the model treats as reaching circulation as active compound. For an injectable that is ester weight: a milligram of enanthate is not a milligram of testosterone. For an oral it is bioavailability, the share that survives the gut and the liver, which is why some orals sit far below 100%. How the model works.
Where these numbers come from
No published reference is recorded for Epistane. Its figures are carried over from the compound database this plotter was built against, and should be treated as the weakest in the set.
Common questions about Epistane
What is the half-life of Epistane?
The model uses a terminal half-life of 6 hours for Epistane. For an injectable that figure is the rate the oil depot releases the compound rather than the rate the body clears it, which is why it runs longer than the half-life of the ester itself.
How long does Epistane take to reach steady state?
Roughly 1.3 days, on a schedule that does not change. Steady state is conventionally taken as five half-lives, the point at which each dose is clearing about as fast as the next one arrives, and at a half-life of 6 hours that puts Epistane at 1.3 days of climbing before the curve flattens.
How long does Epistane stay in your system?
About 1.4 days after the last dose for the serum level to fall to a few percent of where it was, on the same five-and-a-half half-life reasoning. That is the modelled blood level only. It is not a detection window: metabolites are found by testing long after the parent compound has gone, and this model says nothing about that.
Put Epistane on a timeline with the rest of your cycle and watch the curves add up.
Open the calculator