Bank payments paused · to-order items delayedBank payments are temporarily paused, and we apologise for the inconvenience. Crypto is working as normal. UK stock still ships within 24 hours. Items sourced to order are delayed until after the APEC conference in November, and every product shows its dispatch date.Laboratory research only. Not for human consumption.
A certificate of analysis is a PDF. That's the whole problem. It carries the authority of a laboratory document while being, mechanically, a file anyone can open in an editor and change.
The peptide market runs on these documents, so there is a strong incentive to produce one whether or not a test happened. These checks catch most of it, and none of them needs any chemistry.
Start here, because it ends a surprising number of enquiries. "Third-party tested" with no laboratory named is not a test result. A genuine report says who did the analysis, usually in the header.
Where a name is given, look it up yourself rather than through the seller's link. A real analytical laboratory has a website that predates the brand citing it, a price list and other customers. A few operations in this market have built laboratory-shaped websites purely to be cited by the brands that own them.
Reputable laboratories photograph the sample they tested. Compare that photo with the vial you receive: the vial style, the cap colour, the fill. A certificate showing a completely different vial is describing a different product.
Fakes are usually edits of real reports. Look for mixed fonts, text sitting slightly off the line of the rows around it, numbers in a different weight to their labels, or a chart pasted in at a different resolution to the page.
A report dated before the compound was supposedly made, or a test date that suspiciously matches a product launch, is worth a question.
Real analysis varies. Some results come back at 98.4%, some at 99.7%. A whole catalogue returning the same headline number to the decimal place hasn't been tested so much as branded.
A supplier with genuine paperwork can show you a certificate for a compound before you order it. Reluctance to share anything until after payment is worth noticing.
Redacted isn't the same as fake
Resellers commonly black out the manufacturer's name on a certificate so competitors can't go straight to their source. That's normal commercial practice. What matters is that the laboratory is named, the rest of the document is untouched, and the seller tells you openly that it's redacted. More on who actually tests peptides.
The certificates we supply come from Janoshik in the Czech Republic, an independent laboratory with no relationship to us. Where a certificate is one of our suppliers' reports, the supplier's details are redacted for commercial reasons, and we say so. The vial in the certificate photo matches the vial we send. And we've tested our own stock too: our BPC-157 came back at 99.892% purity, published in full on our testing page.
All products supplied by Zenic Labs are for laboratory research use only and are not for human or veterinary consumption. No health, dosing or therapeutic claims are made about any product we sell.
Also worth reading
Eight things you can check yourself before ordering from any UK peptide supplier, including us. Most take under a minute.
How white label and wholesale research peptides work in the UK: labels, documentation, traceability, margins and the questions to ask a supplier.
What a lot number on a peptide vial actually tells you, how to check one, and why it matters more than any certificate if something goes wrong.