A UK Research Buyer’s Guide
Research peptides you can verify, down to the batch.
Every BioHack London batch is independently tested by Janoshik to ≥99% purity, with a Certificate of Analysis you can check at source. This guide shows you how to read one, how to judge any supplier, and exactly what you’re buying.
- ≥99%
- Verified purity by HPLC
- Janoshik
- Independent COA per batch
- 4.5 / 5
- Rated on Trustpilot
- UK
- Tested & dispatched
All products referenced here are supplied solely for in vitro laboratory research and analytical purposes. They are not medicines, supplements, foods or cosmetics, are not for human or animal consumption, and are not intended to diagnose, treat, cure or prevent any condition. 18+.
How to choose a research peptide supplier
Quality varies widely between suppliers, and the label on a vial tells you very little. These are the six criteria that let you judge one objectively.
- 01
Independent third-party testing
The supplier should send samples to an independent laboratory, not rely on in-house claims. Look for HPLC purity and mass-spectrometry identity results.
- 02
Batch-specific Certificates of Analysis
A COA should correspond to the exact batch you receive, not a generic or one-off result. Ask whether testing is per batch.
- 03
Independent verification
The best suppliers let you verify results directly with the testing laboratory, rather than trusting a PDF the seller produced.
- 04
A clear purity benchmark
Look for a stated minimum purity (commonly ≥99%) backed by a report, not a vague “high purity” claim.
- 05
Transparency and reputation
A credible supplier is open about sourcing and testing, has genuine independent reviews, and is clear that products are for research use only.
- 06
Proper handling and dispatch
Products should be supplied lyophilised in sealed vials, with sensible storage guidance and reliable dispatch.
BioHack London independently tests every batch and publishes the results, so you can judge the material on evidence rather than marketing. View the test reports, or read the in-depth guide on how to choose a research peptide supplier.
How to read (and verify) a Certificate of Analysis
A Certificate of Analysis is an independent laboratory report for a specific batch. Once you know what to look for, it takes seconds to read. Here is what each field means, mapped to an example.
Janoshik Analytical
Certificate of Analysis
- 01Product
- BPC-157
- 02Purity (HPLC)
- 99.2%
- 03Content by mass
- 10.1 mg
- 01Identity (MS)
- Confirmed
- 04Batch / task no.
- JA-24-08812
- 05Date
- 2026
- 01
Compound identity
Confirms the vial contains the compound stated, usually verified by mass spectrometry.
- 02
Purity (%)
The proportion of the sample that is the target compound, measured by HPLC. Higher means fewer impurities; ≥99% is a common benchmark.
- 03
Content by mass
How much of the compound the vial actually contains (for example, milligrams), which should match the label.
- 04
Batch / task number
Ties the result to a specific production run and the specific test, so it is not a generic claim.
- 05
Testing laboratory + date
Names the independent lab and when the test was performed. A verification link lets you confirm it at source.
If a supplier cannot show a batch-specific COA from an independent lab, treat any purity claim with caution. For a full walkthrough, read how to read a Certificate of Analysis, or see our real, verifiable test reports.
Purity and testing explained
Two independent methods do most of the work when characterising a research peptide. HPLC (high-performance liquid chromatography) separates the sample into its components and reports purity as a percentage, telling you how much of the material is the target compound versus impurities. Mass spectrometry confirms identity by measuring molecular mass, so you know the vial contains what the label says.
A meaningful result is independent (from a third-party lab), batch-specific (tied to the run you receive) and verifiable (checkable with the testing laboratory). BioHack London tests to a minimum 99% purity and issues a Certificate of Analysis per batch.
What are research peptides?
A peptide is a short chain of amino acids joined by peptide bonds, shorter than a full protein. Research peptides are supplied as reference materials for in vitro laboratory research and analytical work, where scientists study their chemistry and behaviour under controlled conditions.
They are usually supplied lyophilised (freeze-dried) in a sealed vial for stability, and reconstituted with a suitable solvent, such as bacteriostatic water, before laboratory use. Because they are research materials rather than consumer products, the two things that matter most when sourcing them are verified identity and purity and transparent, batch-level testing.
Storage, handling and reconstitution
Most research peptides are supplied lyophilised for stability. As general laboratory practice, unopened lyophilised vials are kept cool, dry and out of light. Reconstitution, dissolving the compound in a suitable solvent such as bacteriostatic water, is done immediately before laboratory use, and the reconstituted solution is typically refrigerated and used within a limited period.
Handling should always follow appropriate laboratory practice for the specific compound. Our reconstitution calculator helps work out solvent volumes, and bacteriostatic water is available in the range.
The compounds we supply
A selection of the research compounds in our range, described by their chemical nature. Each is supplied for in vitro laboratory research only, independently tested with a Certificate of Analysis per batch.
BPC-157
A synthetic pentadecapeptide (a 15-amino-acid sequence).
TB-500
A synthetic fragment of the protein thymosin beta-4.
GHK-Cu
A copper-binding tripeptide (Gly-His-Lys) complexed with copper.
KPV
A tripeptide (Lys-Pro-Val), a fragment of alpha-MSH.
MOTS-C
A mitochondrial-derived peptide.
Epitalon
A synthetic tetrapeptide (Ala-Glu-Asp-Gly).
Semax
A synthetic peptide derived from a fragment of ACTH.
Thymosin Alpha-1
A 28-amino-acid peptide.
Ipamorelin
A synthetic pentapeptide.
AOD-9604
A synthetic peptide fragment derived from human growth hormone.
NAD+
Nicotinamide adenine dinucleotide, a coenzyme present in all living cells.
LL-37
A peptide derived from the human cathelicidin protein.
See the full research range for everything available.
Glossary of research terms
- Peptide
- A short chain of amino acids linked by peptide bonds; shorter than a full protein.
- HPLC
- High-performance liquid chromatography, an analytical method used to separate a sample and measure its purity as a percentage.
- Mass spectrometry
- An analytical method that confirms a compound’s identity and molecular mass.
- Purity (%)
- The proportion of the sample that is the target compound, as measured by HPLC. A higher percentage means fewer impurities.
- Certificate of Analysis (COA)
- A document from an independent laboratory reporting a batch’s identity, purity and content.
- Batch / lot
- A single production run. Testing is most meaningful when it is tied to the specific batch supplied.
- Reconstitution
- The process of dissolving a lyophilised (freeze-dried) compound in a suitable solvent for laboratory use.
- Bacteriostatic water
- A sterile solvent (water with 0.9% benzyl alcohol) commonly used to reconstitute lyophilised research compounds.
- Lyophilised
- Freeze-dried; the form most research peptides are supplied in for stability.
Frequently asked questions
What are research peptides?
Research peptides are short chains of amino acids supplied as reference materials for in vitro laboratory research and analytical work. They are not medicines, supplements, foods or cosmetics, and they are not intended for human or animal use.
Are BioHack London’s products for human use?
No. All products are supplied strictly for in vitro laboratory research purposes. They are not approved for human or veterinary use, are not for human consumption, and are not intended for the diagnosis, treatment or prevention of any condition. Purchasers must be 18 or over and handle products only in a suitable laboratory setting.
How is purity tested, and what purity should I look for?
Purity is measured by independent third-party analysis, typically HPLC for purity and mass spectrometry to confirm identity. As a general benchmark, look for a minimum of 99% purity reported on a batch-specific Certificate of Analysis. BioHack London independently tests its research compounds and publishes the results.
What is a Certificate of Analysis (COA)?
A Certificate of Analysis is an independent laboratory report for a specific batch. It states the compound’s identity, its measured purity (usually by HPLC) and its content by mass. A COA is only meaningful when it corresponds to the exact batch you receive.
Can I verify the test results independently?
Yes. BioHack London’s test reports come from an independent laboratory and can be viewed and, where the lab provides a verification link, checked directly with the testing laboratory rather than taken on the seller’s word.
How should research peptides be stored?
Lyophilised research peptides are generally stored cool and dry, away from light. Once reconstituted, they are typically refrigerated and used within a limited period. Always follow appropriate laboratory handling practice for the specific compound.
Where are the products made and shipped?
BioHack London is a UK supplier of research compounds and reference materials, dispatched within the UK. Every batch is independently tested before it is offered.
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Judge the material on evidence.
Every batch we supply is independently tested to a minimum 99% purity, with a Certificate of Analysis you can verify.