Who the business is
UK rules on selling online say a business must make these details easy to find:
Extra details for UK limited companies
GOV.UK says a limited company must show its registration number, registered office address, where it is registered (England and Wales, Scotland or Northern Ireland) and that it is a limited company, on its website as well as on letters and order forms. You can check those details against the Companies House register.
Testing paperwork
The good manufacturing practice guideline ICH Q7 sets out what a full certificate of analysis contains. It is written for medicine makers, but it is a useful yardstick:
How it is presented
A careful supplier publishes certificates batch by batch, names the lab, and gives the details needed to check each report with that lab. It also keeps to research-use wording. In the UK, a product presented for use in people can be treated as a medicine, which needs a licence from the MHRA.
Educational information only. Nothing here is medical advice, dosing guidance or a recommendation to use any substance. Research peptides are not approved medicines and are not for human or animal consumption. Speak to a qualified professional and follow the law where you are.
