Clearance / Washout Calculator
Estimate when circulating levels drop below a threshold after the last dose.
The level below which the compound is considered washed out.
Typical dose 25.0 mg–100.0 mg · models 16 weeks of decay.
Washout estimate
Levels drop below 50 ng/mL
Model-based washout (when the curve crosses the threshold).
Biological clearance (≈ 5× half-life)
A conservative pharmacokinetic rule of thumb; the threshold estimate above is more dose-specific.
Why two numbers? The threshold date is when the modeled concentration actually crosses your value (dose-dependent). The 5×half-life date is a dose-independent convention used for PCT timing and pre-bloodwork planning. Use them together — and confirm with bloodwork.
Educational use only — not medical advice. Estimates assume linear pharmacokinetics from a single dose and ignore prior accumulation, individual metabolism, and body composition. Do not use to time PCT or bloodwork without a clinician.
Educational use only — not medical advice. Results are estimates based on published formulas and models.