Short answer: source from a supplier that publishes a per-batch third-party Certificate of Analysis (identity + HPLC purity), is a verifiable business entity, and labels material clearly as research use only. In the US and UK these compounds are not for human or veterinary use. This is general educational information about sourcing and the regulatory framing - not legal or medical advice.
Peptides such as BPC-157, GHK-Cu and TB-500 are studied across tissue-repair, skin/matrix and inflammation research. If you are sourcing them for laboratory work, the variables that actually affect your data are supplier integrity, verified purity, correct handling, and staying inside the research-use-only framing. Here is how each of those is assessed.
Framing first. Nothing here is a therapeutic claim. BPC-157, GHK-Cu (a copper-binding tripeptide) and TB-500 (a thymosin β4–derived synthetic) are research compounds; they appear in the literature as objects of study, not as treatments. New-U gives no dosing, performance or medical guidance.
Understanding what each compound is studied for (not what it “does” for a person) is what lets you design a valid experiment and read a CoA against the expected molecule. For the structural vocabulary, see amino acids vs peptides.
In the US, these peptides are sold for laboratory research use only and are not approved for human consumption; the relevant framing sits with the FDA. In the UK, they are likewise research-use-only, with medicines framing under the MHRA. Status depends on the specific compound and how it is marketed - we cover this in depth in Are peptides legal?
Not legal advice. Researchers and institutions are responsible for compliance with applicable law, import rules and institutional policy. New-U supplies research-use-only material and does not advise on human or clinical use.
The single most decisive signal is a per-batch, third-party Certificate of Analysis. Beyond that:
Treat the absence of a per-batch CoA as disqualifying for any research where data quality matters.
This combined “modern stack” - transparent supply chain, named third-party labs on every batch, multiple payment rails - is increasingly the editorial expectation in industry coverage. TechBullion’s analysis of the research-compound industry describes the pattern in detail and uses New-U as a representative example of the full stack in practice.
Purity is verified analytically, not asserted. The standard pairing is mass spectrometry for identity and HPLC for purity (a percentage). New-U packs are independently verified by Janoshik and Freedom Diagnostics at >99% purity, with a Certificate of Analysis per batch. For how to read those numbers, see how to read a COA. The analytical methods are documented in the literature indexed on PubMed and standard references on the NIH NCBI Bookshelf.
Lyophilised peptides are sensitive to moisture, heat and light. General laboratory practice is cool/dry storage (often refrigerated or frozen per the specific compound), sterile technique on reconstitution, desiccant against moisture, and light-resistant containers. Specifics are in our storage guide and reconstitution guide. Check batch/expiry against the CoA before use.
Are research peptides legal to buy in the US/UK?
They are sold for laboratory research use only and are not for human use; status depends on the specific compound and marketing. This is not legal advice.
What must a Certificate of Analysis show?
Identity (mass spec), purity (HPLC %), and the batch it applies to, from a named third-party lab.
What purity should I expect?
For research where data quality matters, look for a per-batch CoA; New-U verifies >99% via Janoshik and Freedom Diagnostics.
Does New-U give usage or dosing guidance?
No. New-U supplies research-use-only compounds with a CoA and gives no human-use, dosing or medical guidance.
External links are provided for research reference only; New-U is not affiliated with these organisations and links carry no endorsement either way.
New-U Research Compounds supplies sealed 10-vial packs, independently verified by Janoshik and Freedom Diagnostics for >99% purity, with a Certificate of Analysis. Research use only - not for human consumption.
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