Almost every peptide vial in Europe or the US comes from China. The difference between the direct supply chain and a Western reseller shop is not the contents, only the route: either the Chinese manufacturer ships straight to you, or a Western shop orders from that same manufacturer, relabels the vial and sells you the identical product at many times the price. On Peptigraph I deliberately look only at the first route, because that is where manufacturer, batch and price can be traced back to the source. This page explains why.
How does a peptide vial get from China to Europe?
A peptide vial reaches Europe through two systems that look almost identical from where you stand as a buyer. In the first, the Chinese manufacturer or its seller builds the shipping routes itself: consignments travel via China Post and EMS (two to four weeks, less customs attention), via express couriers or via SF Express. Sometimes they are bundled into a "master carton" that already contains pre-labeled individual parcels for separate recipients. In the second system, a Western shop sits in between as a middleman, buying from exactly the same suppliers. Both routes begin at the same production facility. Only the second one has an extra step.
| Straight from China | Western shop | |
|---|---|---|
| Who ships | Manufacturer or its seller | The shop or, with dropshipping, that same supplier |
| Origin of the goods | Production facility in China | The same production facility in China |
| Label | Manufacturer label | The shop's own label |
| Price | Purchase price | By my observation a factor of 6, at times 12 to 13 |
| Customs risk | Carried by you | Carried by the shop |
| Trail to manufacturer and batch | Traceable | Breaks at relabeling |
| Legal risk | Higher, and yours | Shifted, not deleted |
| Covered on Peptigraph | Yes | No |
What does a Western peptide shop actually do?
For a share of these shops the honest answer is: it orders from a Chinese supplier, relabels and resells. Dropshipping plays a growing role here. Sellers trade under their own brand without holding any inventory at all, and your order is forwarded automatically to the supplier, who ships directly to you. The vial that arrives at your door has never been inside the shop. Relabeling happens on the manufacturer side too: the Chinese API maker Harbin Jixianglong Biotech bought in semaglutide from outside companies, repackaged it and altered labels and manufacturing dates without reliable documentation.
How high is the markup at a peptide shop?
There are no reliable public figures for the markup per vial. So what I give you here is what I see myself in the price lists I collect and evaluate: between the purchase price on the direct line and the Western retail price the factor is typically six, and in individual cases twelve to thirteen. The pattern is not limited to peptides. Bacteriostatic water costs around six dollars for ten vials of three milliliters on the direct line, while the same product sells for roughly 29 euros in Germany. For an item nobody has to test, cool or certify.
A high markup is not fraud in itself. Intermediary trade is allowed to cost money. The only question is what you get for it.
Do peptide shops test their own products?
Some do, many do not. A share of sellers simply passes on the certificate of analysis from the Chinese manufacturer instead of having the product tested at an independent lab. A manufacturer certificate like that rests entirely on the data of the party selling the goods. But there is another side, and I do not want to leave it out: there are shops that have every batch tested at an accredited third-party lab and publish the results with a batch number and a verifiable code. That is real work, and it is more than relabeling. It just helps you less than it looks.
Why does a published lab certificate say nothing about my vial?
Because a certificate only ever describes the sample that was sent in, never your order. For it to mean anything at all, the batch number on the certificate would have to match the number on your vial exactly. If it is missing or does not match, the industry itself treats that as a disqualifier. And even when everything lines up, it remains open whether your unit came from the same batch as the tested sample.
The Peptide Sciences case shows how little a published certificate guarantees: the vendor published Janoshik lab certificates for most batches and still shut down on 6 March 2026, after 37 retatrutide samples had failed over fifteen months. Janoshik classified at least one batch as counterfeit. That is the real point: not that shops do nothing, but that you cannot check whether they did it for your vial.
So what does the shop take on for me?
One thing above all: the customs risk. And that risk is real. Between December 2025 and March 2026 alone, US Customs seized more than 5,000 individual peptide shipments from China at the Port of Cincinnati. If your direct order gets intercepted, the money is gone, with no replacement. In Germany, importing from a non-EU country brings the Medicines Act into play, and further rules depending on the substance. A shop in your own country takes that part off your hands, because it did the importing itself.
But a shop is no legally safe space either. The FDA does not accept the "research use only" label when a product is in effect marketed for human use, and it has sent warning letters to exactly these resellers. The middleman shifts the risk. He does not delete it.
Why does Peptigraph look only at the direct supply chain?
Because that is where I can see something. On the direct line, manufacturer, batch and price are verifiable, and I can watch chains over time and compare them. That is the basis of the public supply chain and of the methodology behind this site. The moment a middleman sticks on his own label, that trail breaks. What belonged together before, namely manufacturer, batch, certificate and vial, can no longer be matched up afterwards. An importer who relabels is therefore deliberately outside what I look at: not as a judgment about him, but because that is where the evidence ends.
This is expressly not a recommendation to order directly from China. The direct route carries the higher legal risk. It is simply the only one where evidence can be traced back to the source.
I sell nothing and I broker no sources. If you want to know how to check evidence yourself instead of believing it, the Buy safely journey walks you through authenticity and origin step by step. Why the trade remains a grey area overall is covered in the article Why the trade is hard.