Tools
Blood Concentration Estimator
Pharmacokinetic curve modeling with multi-dose superposition
Estimated levels based on published half-life data and first-order elimination kinetics. Individual pharmacokinetics vary significantly. Not medical advice.
Window
Concentration Curves
Peptide Partners — use code DOSECRAFT for a discount
DoseCraft may earn a commission from links on this page.
How This Works
First-Order Elimination
Concentration follows C(t) = C0 · e-ke·t where ke = ln(2) / t1/2. This models how most peptides are cleared from the bloodstream after subcutaneous injection.
Multi-Dose Superposition
Repeated dosing accumulates residual concentration. Each new dose adds on top of the remaining levels from prior doses, eventually reaching a steady state after approximately 4-5 half-lives.