Resources
Reference Material for Peptide Buyers
How to read a Certificate of Analysis, how lyophilised material should be stored, what the published research on a compound actually says, and a calculator for working out reconstitution concentrations. Written for people buying research peptides, not for search engines.
Guides and references
Quality Assurance & Certificates of Analysis
What a batch-specific COA actually proves, how HPLC and mass spectrometry differ, and which labs test our material.
Handling & StoragePeptide Handling & Storage
Cold chain, freeze-thaw cycles, working life after reconstitution, and why lyophilised material ships dry.
Compound GuideCopper Peptides and GHK-Cu
What GHK-Cu is, what the published research has examined, and how it relates to the GLOW and KLOW blends.
Buying & SourcingPeptide Sourcing & Verification Guide
Supplier verification, reading a COA properly, the red flags worth walking away from, and a vetted supplier list.
ComplianceAre Peptides Legal in the UK?
How research peptides sit under UK law, why classification turns on presentation rather than on the compound, and what research use only actually means.
Buying & SourcingRetatrutide in the UK: Legal Status and Prices
Whether retatrutide can be bought legally in the UK, when it might become a medicine, what it costs per vial and how to check a supplier.
Buying & SourcingBPC-157 in the UK: Legal Status and Prices
Whether BPC-157 can be bought legally in the UK, where the evidence actually sits, what it costs per vial and how it compares with the blends.
Buying & SourcingTirzepatide in the UK: Mounjaro vs Research Grade
How research-grade tirzepatide differs from Mounjaro, its legal status in the UK, what it costs per vial and how to check a supplier.
Buying & SourcingSemaglutide in the UK: Wegovy vs Research Grade
How research-grade semaglutide differs from Wegovy and Ozempic, its legal status in the UK, what it costs per vial and how to check a supplier.
Buying & SourcingResearch Peptides for US Buyers
Where US orders ship from, what happens at customs, what research use only means under FDA rules, and dollar prices for the most-ordered compounds.
Buying & SourcingRetatrutide in the US: FDA Status and Prices
Whether retatrutide is FDA approved, where it stands after phase 3, what it costs per vial in dollars and how to check a supplier.
Buying & SourcingTirzepatide in the US: Zepbound vs Research Grade
How research-grade tirzepatide differs from Mounjaro and Zepbound, what happened to compounding, and what it costs per vial in dollars.
Buying & SourcingSemaglutide in the US: Ozempic vs Research Grade
How research-grade semaglutide differs from Ozempic, Wegovy and Rybelsus, what happened to compounding, and what it costs per vial in dollars.
Buying & SourcingTesamorelin in the US: Egrifta vs Research Grade
Why tesamorelin is an approved drug in the US but not the UK, how Egrifta differs from research grade, and what it costs per vial in dollars.
Buying & SourcingBPC-157 in the US: FDA Status and Prices
What the July 2026 FDA advisory vote did and did not change, where the evidence sits, and what BPC-157 costs per vial in dollars.
Buying & SourcingTesamorelin in the UK: Legal Status and Prices
The unusually complete trial record behind tesamorelin, why it is approved in the US but not the UK, and what it costs per vial.
Buying & SourcingBacteriostatic Water vs Sterile Water
How it differs from sterile water, why no Certificate of Analysis is issued for it, how long an opened vial lasts and which size to order.
Buying & SourcingPeptide Blends and Bundles
The four co-lyophilised blends we supply, how GLOW and KLOW differ, and what fixing a ratio does and does not achieve.
ReferenceWhat Are Peptides?
Amino acids, the peptide bond, and where the line falls between a peptide, a polypeptide and a protein. Includes the twenty standard amino acids.
ReferenceAre Peptides Legal in the US?
What FDA approval covers, why research-use-only is a real designation, and where the line falls between a reagent and a medicine.
Buying & SourcingWhere to Buy Research Peptides
Six questions worth asking any supplier, and what a straight answer to each looks like. Useful even if you order elsewhere.
ResellersPrivate Label and White Label Peptides
What gets printed, what artwork is needed, turnaround and minimums, and where compliance responsibility sits.
ReferenceWhat Research Grade Actually Means
No legal definition, what RUO means, and why a purity figure is not a peptide content figure.
ReferencePeptide Glossary
Plain definitions of the terms on peptide labels and COAs, from acetate salt to vial strength.
Buying & SourcingWholesale Peptides for US Buyers
Bulk ordering for US resellers and labs: published dollar prices, 5% off at 10 boxes or more, FedEx shipping from the UK, and what changed for US import duties in 2025–26.
Quality & TestingHow to Verify a Janoshik COA
Where the task number and unique key are, how to check them on Janoshik’s own site, and what a genuine report can and cannot prove about your batch.
Handling & StorageHow Long Do Reconstituted Peptides Last?
What published guidance says about peptides in solution: fridge vs freezer, freeze-thaw, light, and what the 28-day figure actually measures.
Tool
Reconstitution calculator
Work out the concentration of a reconstituted vial in mg/mL, and how much solvent to add to reach a target concentration.
Open the CalculatorQuestions
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