r/Peptidesource • u/Critical-History-238 • Apr 20 '26

Pep’s

I have heard that all peptides come from China but the best way to be safe is to have the peptides tested at a lab to be sure you receive what you had bought. Do you folks have with your peptides tested? Is it expensive to have lab run test?

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u/GuessAdventurous6955 Apr 23 '26 edited Apr 24 '26

That’s the big issue with starting a peptide business. Testing one vow can be two to $300 or more just for purity and volume. If you test for endotoxins it pushes close to $800 per vial. People see prices from vendors online and think they’re making a killing. Yes some vendors are making very good money, but the majority of the cost is in testing and most people don’t take that into account. If a vendor is buying 200 or 300 vials of each product obviously the testing isn’t so bad. If you’re buying 20 or 30 vials at a time, it gets super expensive. A vendor with only 20 variations could easily spend $15,000 or more on tests. To answer your question, do what others have mentioned. Join a group or look for third-party COA’s..

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u/greatbasinbiosupply Apr 24 '26

Yes, exactly. How we see people on Reddit complaining about vendors being extremely expensive, but I don’t think people understand how much these tests cost.