Reference library / 21 compounds
Half-life, with the context left in.
A half-life is the time for a modeled amount to fall by half. Explore the inputs in PinPoint’s compound library, the arithmetic they produce, and the limits that belong beside each number.
The overview curve uses an illustrative 24-hour input. Choose a compound for its own number.
168 hours · Library reference input
120 hours · Library reference input
0.25 hours · Low-confidence tracking input
3 hours · Low-confidence tracking input
2 hours · Library reference input
0.5 hours · Low-confidence tracking input
192 hours · Library reference input
33 hours · Library reference input
144 hours · Library reference input
168 hours · Library reference input
0.5 hours · Low-confidence tracking input
2.5 hours · Library reference input
1 hours · Low-confidence tracking input
0.18 hours · Library reference input
0.15 hours · Library reference input
0.92 hours · Library reference input
0.5 hours · Low-confidence tracking input
3 hours · Low-confidence tracking input
24 hours · Low-confidence tracking input
0.12 hours · Low-confidence tracking input
0.07 hours · Library reference input
Hours describe a model, not an outcome
The same fraction is removed in each half-life: 100% becomes 50%, then 25%, then 12.5%, then 6.25%. The number of hours changes from one library entry to another, while that sequence stays the same. A long half-life stretches the horizontal axis. A short half-life compresses it. Neither tells you whether a compound is appropriate for a particular person.
These pages use a single-contribution model without an absorption phase. They explain how a reference number becomes a curve, rather than estimating your blood concentration. Time to peak, route, formulation and individual variation matter beyond this simple arithmetic. A percentage remaining must not be read as a percentage of benefit or as permission to make a schedule change.
Read the evidence before the decimal places
Each detail page identifies the stored input and its source line in the library snapshot. The source note then distinguishes label information, human publication context, preclinical data and low-confidence tracking estimates. Some references describe a different route from the routes exposed in the app. Others provide context without establishing the exact scalar used by the tracker.
A smooth curve cannot make an uncertain input more certain. BPC-157, for example, carries an intravenous animal reference, while the PT-141 entry stores a scalar that differs slightly from the number in its citation note. Those distinctions remain visible on their pages. When a cited range is available, it is shown alongside the representative number rather than hidden behind a single value.
Connect timing with an organized record
For an unchanged pattern of equally spaced inputs, about five half-lives is a useful arithmetic approximation to approaching a repeating steady-state pattern. It does not mean the line becomes flat. Peaks and troughs continue. Frequency labels such as three times weekly do not define exact gaps, so these pages avoid inventing a single accumulation ratio for them.
PinPoint lets you log compound, dose, site and pain level, backfill your history, and view modeled levels between doses. Its reminders follow the day and time you set. The library pages explain the timing inputs; the calculators handle unit conversion from values you enter. Keeping those tasks distinct helps a number remain understandable.
PinPoint is a tracking and unit-conversion tool, not a medical device. Modeled levels are mathematical illustrations, not blood tests or individual predictions. Medical decisions belong with your healthcare provider.