Peptide Clearance Estimator
Estimate remaining amount and percent cleared using exponential half-life decay. Pick a peptide to auto-fill its half-life, then see the decay curve, a per-half-life breakdown, and how long until it is effectively cleared.
Clearance inputs
Decay by half-life
| Half-lives | Remaining | Time |
|---|---|---|
| 1× | 50.0% | 7.0 days |
| 2× | 25.0% | 14.0 days |
| 3× | 12.5% | 21.0 days |
| 4× | 6.3% | 28.0 days |
| 5× | 3.1% | 35.0 days |
Remaining
820.3mcg
Remaining %
82.03%
Cleared
17.97%
50% cleared (1 half-life)
7.0 days
90% cleared
23.3 days
95% cleared
30.3 days
99% cleared
46.5 days
~fully cleared (5×)
35.0 days
Educational model only — exponential first-order decay (½^(t / half-life)). Pharmacokinetics vary by route, formulation, metabolism, and individual response.
How clearance works
Most peptides follow first-order kinetics: a fixed fraction clears each half-life, not a fixed amount. After one half-life 50% remains, after two 25%, after three 12.5%, and so on. By five half-lives only about 3% is left, which is why a compound is usually considered effectively cleared by then.
Educational model only
This is a simplified single-compartment model. Real pharmacokinetics vary by route, formulation, metabolism, absorption, and individual response. Not medical advice.