Fundamentals
What Are Research Peptides?
How peptides function as signaling molecules and why they're studied in laboratory research.
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Neutral, science-first overviews to support informed research decisions. Purely educational — no medical advice, dosing, or human-use guidance.
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What Are Research Peptides?
Peptides are short chains of amino acids that occur naturally in living organisms, where they play a central role in biological signaling, cellular communication, and structural processes. In laboratory settings they are studied to better understand metabolism, tissue structure, hormone signaling, and cellular regulation.
Because peptides are fundamental to many biological systems, researchers use them in controlled environments to investigate how cells communicate, adapt, and maintain function. The articles below expand on these topics—organized so you can find what's relevant to your research quickly.
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Research Library
Browse by Topic
New overviews are added regularly. Each article is written for research context only.
Compound Overview
BPC-157: Research Overview
Background on this pentadecapeptide and the tissue-repair pathways researchers investigate.
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Compound Overview
Metabolic Peptides Explained
An introduction to compounds studied for energy regulation and metabolic signaling.
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Guide
Peptide Research Guide: Types, Uses & Current Research
Explore our complete peptide research guide covering types of peptides, how they work, current scientific research, potential applications, safety, and more.
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Compound Overview
Selank Research Overview
Learn more about Selank and its nootropic effects.
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Compound Overview
GHK-Cu: Research Overview
The copper-binding peptide's role in collagen synthesis, wound healing, and tissue remodeling research.
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Compound Overview
MOTS-c: Research Overview
The mitochondrial-derived peptide studied for AMPK activation, glucose metabolism, and exercise adaptation.
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Compound Overview
Tirzepatide: Research Overview
The dual GIP/GLP-1 receptor agonist's mechanism, SURPASS trial findings, and regulatory status.
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Compound Overview
Semax: Research Overview
The ACTH-derived neuropeptide studied for BDNF/NGF signaling and stroke-recovery research.
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Compound Overview
MT-1 (Melanotan I): Research Overview
The MC1R-selective melanocortin peptide's Phase 3 findings and how it differs from Melanotan II.
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Compound Overview
Retatrutide: In-Depth Research Overview
Triple GIP/GLP-1/glucagon receptor mechanism and full TRIUMPH Phase 3 trial findings, with direct citations.
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Compound Overview
Glow Blend: In-Depth Research Overview
A deep dive on each component of Glow — BPC-157, TB-500, and GHK-Cu — with direct research citations.
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Compound Overview
Tesamorelin: In-Depth Research Overview
GHRH mechanism, pivotal NEJM/JAMA trials, a 2026 meta-analysis, and its FDA-approved indication.
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Compound Overview
NAD+: Research Overview
The cellular coenzyme's role in aging research, the NADPARK/NR-SAFE trials, and the evidence gap between commercial NAD+ and controlled research.
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Guide
GLP-1 Receptor Agonists: A 2026 Landscape Overview
Semaglutide, tirzepatide, and retatrutide compared — mechanisms, trial data, and regulatory status.
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Handling
Bacteriostatic Water vs. Sterile Water
The 0.9% benzyl alcohol difference, FDA labeling, and which diluent to choose for reconstitution.
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Fundamentals
What Does "Research Use Only" Actually Mean?
The legal origin of RUO in FDA diagnostic regulation, and how it applies to research chemicals.
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Compound Overview
Klow vs. Glow: What's the Difference?
The exact composition of both blends, and the research behind KPV — Klow's key addition.
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Handling
Peptide Reconstitution: A Research Guide
Diluent selection, laboratory mixing technique, and stock-solution concentration chemistry.
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Handling
Storage & Stability: Lyophilized vs. Reconstituted
Degradation pathways, freeze-thaw risks, and stability timeframes from the research literature.
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Quality Control
How to Read a Certificate of Analysis
A line-by-line guide to HPLC purity figures, mass spec identity confirmation, batch numbers, and COA red flags.
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Quality Control
HPLC & Mass Spectrometry Explained
How the two analytical methods behind every credible COA actually work — purity by HPLC, identity by mass spec.
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Compound Overview
BPC-157 vs. TB-500
Comparing two structurally unrelated tissue-repair peptides — origin, mechanisms, and what the literature shows.
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Advanced Reading
Research Deep Dives
Longer, citation-heavy articles on mechanisms, trial comparisons, evidence quality and laboratory practice.
Mechanism
Retatrutide and the Glucagon Question
Why a third receptor was added to the GIP/GLP-1 backbone, and what preclinical and trial data report.
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Research Comparison
Tirzepatide vs. Semaglutide
Receptor pharmacology plus the SURPASS-2 and SURMOUNT-5 head-to-head trial data.
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Evidence Review
GHK-Cu Gene Expression Studies
What the Connectivity Map analyses report about GHK-Cu, and the limits of in silico evidence.
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Mechanism
Mitochondrial-Derived Peptides
Humanin, MOTS-c and SHLPs: how mitochondrial DNA encodes signaling peptides.
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Research Comparison
GHRH Analogs Compared
Tesamorelin, sermorelin and CJC-1295: structure, half-life, and evidence base.
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Evidence Review
BPC-157 Evidence Map
A 2025 systematic review found 35 preclinical studies and one small clinical study. What that means.
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Research Comparison
Selank vs. Semax
Two Russian-developed neuropeptides compared: origins, gene-expression data, and evidence gaps.
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Experimental Design
NAD+ Precursors in Research
NR, NMN and NAD+ itself: biosynthesis, human trials, and measurement pitfalls.
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Handling
Benzyl Alcohol in Bacteriostatic Water
Preservative chemistry, USP efficacy testing, assay interference, and documented limits.
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Quality Control
ISO/IEC 17025 and Your COA
What lab accreditation does and does not certify, plus a COA verification checklist.
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