The Halflife Blog

In-depth writing on peptide science, GLP-1 pharmacology, and protocol design.

The Halflife blog covers compound mechanisms, half-life pharmacokinetics, real-world protocol considerations, and the science behind the tools we build. Articles are written by the Halflife Labs team and grounded in published research.

Latest Articles

Tool Comparisons May 23, 2026 · 12 min read

The Best SteroidPlotter Alternative in 2026: Why Researchers Are Switching to a Real Pharmacokinetic Engine

SteroidPlotter renders single-bolus decay curves in a browser tab. Halflife computes steady-state accumulation, peak-to-trough ratios, and R_acc multipliers — across 45+ compounds, on mobile, with dynamic trough alerts.

SteroidPlotter alternative steady-state accumulation trough alerts

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Tool Comparisons May 23, 2026 · 13 min read

PepCalc Alternative: Why a Reconstitution Calculator Is Only Step One — And What You Need After It

PepCalc solves the BAC water calculation correctly. It stops at the syringe. Halflife Labs begins where every reconstitution calculator ends — modeling decay curves, accumulation, and trough alerts from the moment of injection.

PepCalc alternative peptide reconstitution calculator bac water calculator

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Pharmacokinetics Education May 23, 2026 · 15 min read

How to Calculate Peptide Steady State: The Complete Guide to Blood Concentration Curves and Accumulation

Every peptide protocol reaches a ceiling — a steady-state plateau where each new dose exactly replaces what eliminated since the last. This guide walks through R_acc, decay curves, and peak-to-trough ratios with three fully worked examples: ipamorelin TID, CJC-1295 DAC weekly, and semaglutide weekly.

calculate peptide steady state peptide half life calculator steady state accumulation

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CASE STUDIES

Protocol outcome reports

Cohort-based adherence and outcome data for specific compound combinations.

PUBLISHED INSIGHTS

Research from protocol data

Longitudinal analysis on adherence, stacking, and dose escalation patterns.

COMPOUND DATABASE

45 compound profiles

Citation-backed half-life values, mechanism summaries, and dosing references.