Research Journal
Evidence-tiered, primary-source articles on peptide history, mechanisms, and regulatory literacy — written to the same standard as the Peptide Research Guide.
Peptide Stability: Temperature & pH Effects Explained
How temperature and pH affect peptide stability: hydrolysis, oxidation, deamidation, and aggregation degradation pathways, cited pharmaceutical chemistry.
Peptide Degradation: What Breaks Compounds Down
Peptide degradation: hydrolysis, Met/Trp/Cys oxidation, deamidation, disulfide scrambling, aggregation, and light. Cited pharmaceutical chemistry reference.
How to Calculate Peptide Concentration After Reconstitution
The lab math for peptide concentration: mass/volume formula, mg/mL vs. molarity, molecular weight, serial dilutions, and worked stock solution examples.
Peptide Storage & Shelf Life: The Science Explained
Peptide storage shelf life explained: lyophilized vs reconstituted stability, storage temperatures, freeze-thaw damage, and aliquoting — with real citations.
What Is IGF-1 LR3? Mechanism, Evidence & Research
IGF-1 LR3 is a synthetic IGF-1 analog with reduced IGFBP binding, studied in cell culture. Covers mechanism, GH axis, evidence tiers, and WADA status.
What Is Tirzepatide? The Science Explained
Tirzepatide (Mounjaro, Zepbound) is an FDA-approved dual GIP and GLP-1 receptor agonist. Science explainer: incretin mechanism, dual agonism, SURPASS and SURMOUNT trial evidence.
What Is Selank? Mechanism and Evidence
Selank is a synthetic heptapeptide analog of tuftsin studied in preclinical models for GABAergic signaling, BDNF expression, and immunomodulation. Mechanisms, evidence tier, and regulatory status.
What Is the Half-Life of a Peptide? PK Basics
Peptide half-life (t½) is the time for plasma concentration to fall 50%. Learn elimination kinetics, why native peptides clear fast, and how t½ is extended.
How to Source Research Peptides: Purity Standards & QC
How researchers evaluate research-grade peptide material: third-party CoA, HPLC purity %, mass-spec identity, endotoxin testing, RUO labeling, and red flags.
Research Ethics in Peptide Science: IRB, IACUC & Standards
How research ethics oversight — IRB, IACUC, the 3Rs, GLP, and the Belmont Report — governs peptide science and why it matters for valid, reproducible findings.
Peptide Vial Solvents: BAC Water vs. Sterile vs. Acetic Acid
Compare bacteriostatic water, sterile water, and acetic acid as peptide reconstitution solvents — solubility chemistry, sample integrity, and cited research.
WADA Prohibited List: Peptide Categories Banned in Sport
How WADA classifies peptides on its Prohibited List: S0 non-approved substances, S2 peptide hormones, GHRPs, GHRH analogs, IGF-1, and why research peptides appear.
P-Values and Effect Sizes in Peptide Research, Explained
P-values explained: what they mean, common misreadings, effect sizes, confidence intervals, and why this matters when evaluating peptide research studies.
What Is a Randomized Controlled Trial? RCTs Explained
A plain-English guide to randomized controlled trials: randomization, blinding, placebo controls, intention-to-treat, and CONSORT, for peptide researchers.
What Is CJC-1295? Mechanism and Evidence
CJC-1295 is a synthetic GHRH analog that binds albumin to extend its half-life to 5–8 days. Evidence overview, DAC vs. non-DAC distinction, pharmacokinetics, and regulatory status.
What Is Bacteriostatic Water? The Chemistry
Bacteriostatic water is sterile water containing ~0.9% benzyl alcohol. Learn the chemistry of how benzyl alcohol inhibits bacterial growth and why it matters for multi-use research...
What Is a Peptide? A Clear Definition
A peptide is a short chain of amino acids joined by peptide bonds, typically 2–50 residues. Learn how peptides differ from proteins, how they signal, and...
Peptide Vial Chemistry: The Science of Stability
Why research peptides are lyophilized, how solvent chemistry and pH affect stability, and the four degradation pathways that break peptides down, analytical chemistry explained.
Tissue Repair Peptides: A Research Overview
An evidence-tiered overview of the tissue repair peptide category: BPC-157, TB-500 (Thymosin β4), GHK-Cu, and KPV, shared mechanisms, evidence landscape, and regulatory status.
How to Read Evidence Tiers in Peptide Research
Evidence tiers explained: how to interpret the hierarchy from human RCTs to in vitro data, what clinical trial phases mean, and the Legendary Labz 4-tier framework.
The History of Peptides: From Insulin to the Modern Era
A documented history of peptide science, from Banting and Best's 1921 insulin discovery to Merrifield's synthesis breakthrough and today's GLP-1 research era.
GLP-1 & Metabolic Peptides: A Research Overview
How the incretin system works, GLP-1, GIP, and glucagon signaling, and the progression from single to dual to triple receptor agonists in metabolic research.
What Is Ipamorelin? Mechanism and Evidence
Ipamorelin is a selective GHS-R1a agonist studied for pulsatile growth hormone release. Mechanism, selectivity vs. older GHRPs, preclinical evidence, FDA status, and WADA classification.
What Is GHK-Cu? The Copper Peptide Science, Explained
GHK-Cu (glycyl-L-histidyl-L-lysine-copper) is a naturally occurring tripeptide studied for collagen remodeling, gene expression modulation, antioxidant activity, and wound healing. Evidence overview and regulatory status.