u/BillStock256

If anybody is looking for a company with transparency molecularesearch.com has some amazing prices, also u get a free GHK-cu and tesa with your first order.

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Disclosure: I run a small peptide company. No links or codes here, I'm not selling anything in this post. There's a lot of "is this legit" threads on here so I figured real lab results, including one that failed, is more useful than another opinion.

Three of my own lots went to Freedom Diagnostics on 7/27 and results came back 7/30. Same lab, same method on all three, HPLC with UV detection coupled with mass spec.

ML-001, ML-RT 10mg. 99.84% pure, identity confirmed, 12.11mg of actual peptide against a 10mg label. Accession 2607270194.

ML-003, GHK-Cu 50mg. 99.54% pure, identity confirmed, 53.65mg against a 50mg label. Accession 2607270196.

ML-002, Tesamorelin 10mg. Identity failed, no analyte detected. The lab went looking for tesamorelin and found none. Not weak, not degraded, nothing in the vial. Accession 2607270195. That lot was never sold.

Here's the part that should bother people. The tesamorelin and the ML-RT were both white lyophilized powder. Same description on both reports, same thing sitting on the desk. One came back at 121% of label and the other had nothing in it at all. There was nothing to see, no way to catch it by looking. That's the only reason testing exists.

The main thing I'd want people to take from it is that purity and content are two different numbers, and vendors count on you not knowing that. Purity is a percentage, out of the peptide the machine found, how much of it was the right one. Content is a weight, how many milligrams are actually in the vial. A vial can come back 99% pure and still be underfilled, because pure only describes what's there. If the label says 10mg and there's 6mg in it, that 6mg can still be 99% pure. It says nothing about how much you got. Most COAs only report purity, so when someone waves 99% at you the real question is how many milligrams.

What I check now is pretty simple. Lot number on the certificate has to match the vial in my hand, that's the most common trick going, a real COA for a different batch. The method has to be named, because 99% on its own is just a claim, a real report tells you HPLC, mass spec, the column, the wavelength. And identity has to be listed separately from purity, purity tells you it's mostly one thing and identity tells you which thing. Also if a catalogue shows exactly 99% on every product on every lot forever, that's a marketing number. Real results move around. 99.84, 99.54, and one that didn't have a number at all.

Easiest way to check any vendor is the lab's own site. Most testing facilities have a COA lookup, and the lab's name should be on whatever certificate you were sent along with an accession or reference number. Put the number in and it pulls up the actual test. If nothing comes up, or the vendor can't tell you which lab ran it, you've got your answer. The three accession numbers above are there for exactly that reason.

Any questions, ask away.