A controlled space
Filtered air is the standard for a proper US fill, so less gets into the vial while it's open.
Stop taking anyone’s word for it.
Most brands give you a purity number and call it a day. Purity's the easy part. Read this before you trust anyone's lab report. Ours included.
100%·Every batch gets a report before it’s sold
0·Batches we’ll ever sell without a passing report
US-made·Newport Beach, CA compounding step
Live·Report library updates with every new batch
Same powder. Different vial.
You've seen the TikToks: "check the purity." But purity just means the powder is good. Almost everyone's powder is good. Nobody posts a bad one.
Almost every peptide starts as the same powder, from the same overseas factories. Yours, ours, even what big pharma ships your doctor. That part's settled.
No cleanroom. No lab report. Nothing to trace.
No report, no way to know.
Newport Beach, CA. Freedom Diagnostics report. Published before we sell it.
Ours.
Raw powderSame source. Every brand.
Sealed vialClean lab. Ours.
The difference is what happens next. Turning that powder into a sealed vial is called compounding, the step nobody talks about. Do it cheap, in an unregulated room, and the powder picks up problems a purity test won't catch: contamination, a peptide that's breaking down before it reaches you, or a vial that's short on what you paid for. The report still reads 99%.
Compounded in a US facility, that whole list goes away. It costs two to three times as much, so almost nobody does it. We made the opposite call. Then we send every batch to Freedom Diagnostics, the independent lab that checks our work, because you shouldn't have to take our word for it. Same powder. Different vial. That's the difference that matters.
Do your research.
The step that makes the difference.
We said US compounding is the difference. Here's what that step actually involves.
Filtered before sealing
The compound passes through a fine filter before it's sealed. Standard practice for a real fill.
Sealed in the room
Capped inside that same controlled space, not out in the open. Order of operations is the whole point.
A paper trail on every lot
Who made it, and when. Pull any lot number, the file's there.
Tested at the end
The finished, sealed vial gets tested every batch by Freedom Diagnostics, not just the raw powder. What's inside is what you actually get.
How to read a COA.
Purity's the easy part, here's the rest. Every one of these is on ours. Run any brand through the same list. Miss two, walk.
Lot number
Matches the stamp on your vial, or you're reading someone else's results.
Purity, with the proof
The purity number and the lab chart behind it. A number with no chart is just a claim.
Identity
Proof it's actually the compound on the label.
Net content
Milligrams of actual peptide in the vial. Proof you got what you paid for, not just pure powder.
A named lab you can contact
Ours is Freedom Diagnostics. Name, site, and email right on the report. Not us, them.
Dated within 90 days
Tests expire.
Every product shows all six. Report live before the batch sells.
New batches get published here first.
Before a batch is sold, its lab report goes live on this page. No exceptions. That's the rule, not a marketing line.
Every batch’s certificate of analysis, searchable by lot.
View the COA libraryPlain English. No fluff. Just answers.
Everyone asks the same questions. Here they are, straight: no pitch, no spin.
All products sold by PROXILABZ are intended for research use only. Not for human consumption. Not for veterinary use. Not for distribution. Certificates of Analysis are provided for informational transparency and do not constitute an endorsement or approval for any use beyond in-vitro research.