Core Research Peptides

Core peptide compounds used in laboratory and scientific research.
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NordBioLab supplies research peptides intended exclusively for laboratory and scientific research. Every available batch is supported by independent analytical documentation, including HPLC purity testing and batch-specific Certificates of Analysis (COA) where applicable.

Our product range is designed for research institutions, laboratories and qualified professionals seeking transparent documentation, reliable European fulfillment and consistent quality standards.

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Useful Articles

HPLC Testing Explained: How Peptide Purity Is Measured

|NordBioLab Research Team
When evaluating a research peptide, one of the most important quality indicators is HPLC purity. If you've ever reviewed a Certificate of Analysis (COA), you've likely seen a statement such as:...

LC-MS Testing Explained: How Peptide Identity Is Confirmed

|NordBioLab Research Team
When reviewing a Certificate of Analysis (COA), researchers often see statements such as: Identity: Confirmed by LC-MS Method: LC-MS LC-MS: Pass But what exactly does this mean? Liquid Chromatography–Mass Spectrometry...

Storage of Lyophilized Peptides: Best Practices for Stability and Long-Term Storage

|NordBioLab Research Team
Proper storage is one of the most important factors in preserving the quality and stability of research peptides. Although lyophilization (freeze-drying) greatly improves peptide stability, storage conditions still play a...

Selank and Semax: Cognitive Peptide Research Overview

|NordBioLab Research Team
Selank and Semax represent a complementary pair of neuropeptides with documented clinical use in Russia and growing international research interest. Selank's GABAergic and anxiolytic mechanism provides research tools for stress...

BPC-157 and TB-500: Combined Research Models

|NordBioLab Research Team
The scientific rationale for studying BPC-157 and TB-500 in combination rests on their complementary mechanisms targeting sequential steps in tissue repair: BPC-157 addresses vascular supply and extracellular matrix synthesis, while...

SS-31: Mitochondrial Targeted Peptide Research Overview

|NordBioLab Research Team
SS-31 represents the most advanced mitochondria-targeted research peptide currently available, with a defined molecular mechanism (cardiolipin binding and stabilization), extensive preclinical literature across cardiac, renal, muscle, and neurological models, and...

Peptide Purity Explained: What Do 95%, 98%, and 99% Actually Mean?

|NordBioLab Research Team
When purchasing research peptides, one of the first specifications researchers notice is the reported purity percentage. Typical values include: 95% 98% 99% or higher But what do these numbers actually...

Thymosin Alpha-1: Immune Modulation Research Overview

|NordBioLab Research Team
Thymosin Alpha-1 occupies a unique position in the research peptide landscape as a compound with both a robust preclinical literature and substantial clinical trial experience spanning infectious disease, oncology, and...

Retatrutide: Next-Generation Triple Agonist Research Overview

|NordBioLab Research Team
Retatrutide represents the leading edge of metabolic peptide research in 2026 — a triple receptor agonist with Phase 2 clinical data showing weight reduction exceeding any previously reported pharmacological intervention....

Research Peptides in Europe 2026: Regulatory Framework for Researchers

|NordBioLab Research Team
The European regulatory framework for research peptides distinguishes clearly between research use — which is legal, established, and essential to the biomedical research ecosystem — and therapeutic or clinical use,...

GHK-Cu (Copper Peptide): Research Overview

|NordBioLab Research Team
GHK-Cu is one of the most thoroughly investigated tripeptides in regenerative biology research. Its documented association with modulation of thousands of human genes, combined with consistent in vitro findings on...

CJC-1295 No DAC vs CJC-1295 with DAC: Understanding the Difference

|NordBioLab Research Team
CJC-1295 No DAC and CJC-1295 with DAC share a GHRH receptor-binding backbone but differ fundamentally in pharmacokinetic behavior. The No DAC form produces short-duration pulsatile GH stimulation; the DAC form...

MOTS-C and Mitochondrial Research: An Overview

|NordBioLab Research Team
MOTS-C occupies a unique position in the peptide research landscape as a mitochondria-encoded signaling peptide with documented effects on AMPK pathways, metabolic regulation, and age-associated functional parameters in preclinical models....

Peptide Storage and Handling in Laboratory Settings

|NordBioLab Research Team
Correct peptide storage and handling is not a secondary consideration — it is a prerequisite for experimental validity. Lyophilized peptides stored at −20°C with single-use aliquots prepared at reconstitution, using...

CJC-1295 and Ipamorelin: Research Applications in Growth Hormone Pathway Studies

|NordBioLab Research Team
CJC-1295 and Ipamorelin represent complementary tools for investigating the growth hormone secretion axis through two distinct receptor pathways. Their combined use in research models allows investigators to examine dual-pathway GH...

HPLC Testing Explained: How Peptide Purity Is Verified

|NordBioLab Research Team
One of the most common questions researchers ask when reviewing a Certificate of Analysis (COA) is: "What does HPLC purity actually mean?" High-Performance Liquid Chromatography (HPLC) is one of the...

What is Epithalon? Longevity and Telomere Research Summary

|NordBioLab Research Team
Epithalon occupies a unique position in longevity research — a tetrapeptide with a concentrated but geographically specific publication record, centered on telomere biology, pineal function, and aging models. Its telomerase...

TB-500 Peptide: Mechanisms Studied in Research

|NordBioLab Research Team
TB-500 represents a well-characterized synthetic fragment of one of the most abundant intracellular proteins in mammalian biology. Its actin-binding mechanism has generated research interest across connective tissue, cardiovascular, ocular, and...

What Does Lyophilized Mean?

|NordBioLab Research Team
If you've purchased a research peptide, you've probably noticed that it arrives as a white powder or solid "cake" inside a sealed vial. This form is known as lyophilized, or freeze-dried....

Why Doesn't Every Lyophilized Peptide (Cake) Look the Same?

|NordBioLab Research Team
One of the most common questions researchers ask after receiving a peptide is: "Why doesn't my peptide form a solid white cake at the bottom of the vial?" The short...

Tirzepatide vs Semaglutide: A Research Comparison

|NordBioLab Research Team
Semaglutide and tirzepatide share incretin pathway mechanisms but differ fundamentally in receptor targeting. Tirzepatide's dual GIP/GLP-1 mechanism has generated significant research interest, with published clinical data suggesting differential outcomes in...

What is BPC-157? A Research Overview

|NordBioLab Research Team
BPC-157 is one of the most extensively studied synthetic peptides in preclinical research, with a broad publication record across gastrointestinal, musculoskeletal, and neurological research domains. Its stability profile and multi-system...

Why Endotoxin Testing Matters in Peptide Research

|NordBioLab Research Team
Endotoxin contamination is invisible to standard HPLC purity testing, highly potent in mammalian biological systems, and capable of fundamentally invalidating cell-based and in vivo research results. It is not a...

How to Read a Peptide Certificate of Analysis (COA)

|NordBioLab Research Team
A peptide COA is not a formality — it is the primary tool for verifying that the compound you are using in your research is what it claims to be,...

The Lyophilized Peptide Is Attached to the Side of the Vial. Is It Damaged?

|NordBioLab Research Team
Learn why a lyophilized peptide may appear attached to the side of the vial instead of forming a compact cake at the bottom. Discover which visual differences are normal, what...

What Is Bacteriostatic Water

|NordBioLab Research Team
Bacteriostatic Water is sterile water that contains a small amount of benzyl alcohol as a preservative. In laboratory settings, it is commonly used as a diluent for the reconstitution of lyophilized...

Lyophilized vs Liquid Peptides

|NordBioLab Research Team
Research peptides are commonly supplied in one of two forms: lyophilized (freeze-dried) powder or pre-mixed liquid solution. Both formats contain the same peptide sequence, but they differ significantly in stability, storage...

Reconstituted Peptide Stability: How Long Do Peptides Remain Stable After Reconstitution?

|NordBioLab Research Team
One of the most common questions researchers ask is: "How long does a peptide remain stable after it has been reconstituted?" The answer depends on several factors, including the peptide...

How Laboratories Evaluate Peptide Suppliers

|NordBioLab Research Team
Selecting a research peptide supplier involves much more than comparing prices. For laboratories, universities, and research organizations, consistency, traceability, and analytical quality are often far more important than cost alone....

Choosing the Right Peptide Vial Size: 5 mg, 10 mg, 20 mg, 40 mg, 50 mg, 100 mg 500 mg

|NordBioLab Research Team
Research peptides are available in a variety of vial sizes. One of the most common questions researchers ask is: "Which vial size should I choose?" The answer depends on the...

HPLC Testing Explained: How Peptide Purity Is Measured

|NordBioLab Research Team
When evaluating a research peptide, one of the most important quality indicators is HPLC purity. If you've ever reviewed a Certificate of Analysis (COA), you've likely seen a statement such as:...