Research Use Only. Everything here is about analytical reference materials for in-vitro laboratory research, and how to read the paperwork that comes with them. This is about documents and verification — not dosing, administration, or human use.
Here's an uncomfortable truth: the "Certificate of Analysis" a vendor shows you is the easiest thing in this entire industry to fake.
It's a PDF. With five minutes and free software, anyone can change a purity number, drop a real lab's logo onto a junk report, and turn a garbage batch into a clean-looking "99.8%" certificate you'd never spot as fake. Labs have caught forgeries built from stolen logos, copied signatures, and headers lifted straight off legitimate reports.
This isn't paranoia. In June 2025, federal agents shut down Amino Asylum — one of the biggest names in the space — over allegations they were spiking products and selling things that didn't match the label. That wasn't a freak event. It's what this market looks like when nobody's checking: counterfeits, underdosed vials, and recycled paperwork everywhere.
So the real question was never "does this vendor have a COA?" Everybody has a COA. The question is whether that piece of paper actually describes the vial you're about to buy — or describes nothing at all.
Here are the five red flags that catch a fake, starting with the one almost everyone gets wrong.
Red Flag #1: You Take Their Word For It
This is the big one, so read it twice.
A COA you can't check yourself is not proof. It's a screenshot. The whole point of third-party testing is that you can confirm the result on the lab's own website — without trusting the person trying to sell you something. If the only evidence a test ever happened is a PDF the vendor emailed you, you have exactly nothing.
The good labs make this easy. A real Janoshik report, for example, carries a unique key and usually a QR code that pull the original results straight from Janoshik's public database. (We walk through that whole process step-by-step in How to Verify a Janoshik COA — bookmark it.) The short version: scan or type the key, and the lab's own site tells you what was actually tested.
But here's the trap nobody warns you about
Most guides stop at "if the key verifies, you're good." That's wrong, and it's exactly how the smart scammers get you.
A verification key can be 100% real and the COA can still be a lie. How? The vendor takes a genuine Janoshik report — for a different product — and passes it off as testing for what you're buying. The key checks out. The lab's database loads. Everything looks legit. It's just describing something else entirely.
This actually happened in 2024 with a mid-sized vendor. They posted a Janoshik COA for NAD+ — but stripped off the QR code and key so buyers couldn't cross-check it. When people dug in anyway, the test number on that "NAD+" certificate actually belonged to a batch of bacteriostatic water from a completely different overseas supplier. Real test, real key, real lab — wrong product. The whole thing was a lie that passed verification.
So the actual check isn't "does it verify." It's:
- Does it verify at all? No key, dead key, or "trust us, we test in-house" — walk away.
- Does the verified result match the thing you're buying? The compound name, the date, and the molecular weight on the lab's site have to match the product in front of you. Not "a Janoshik report exists" — this report, for this peptide.
- Can you tie it to your actual vial? The batch or lot number should connect the certificate to the specific vial you receive. A verified test for some other batch tells you nothing about yours.
One more tell from that case worth burning into memory: when the QR code and key are missing from an otherwise official-looking report, that's not an oversight — that's the move. As one forum veteran put it, it's rare for a doctored report to still carry a working QR code, because the code is the very thing that exposes it. Cropped-out credentials are a confession.
And if you're ever unsure? Email the lab. A one-line message — "did you issue test #X?" — gets answered, and it exposes a fake in about thirty seconds.
Red Flag #2: The Numbers Are Too Perfect
This one hides in plain sight, and once you see it you can't unsee it.
Real lab testing is messy. Even excellent manufacturing produces small wobbles from batch to batch — that's just chemistry. Honest purity numbers live somewhere around 98–99.2% and they move around. So when the numbers look too clean, get suspicious:
- 100.0% purity. Essentially impossible in real chemistry. Even 99.99% should make you squint.
- Suspiciously round numbers like a flat 99.00% or 98.00%. Real results look like 98.73% or 99.14% — believably specific.
- The same number on everything. If every product in the catalog reports an identical 99.3%, with the same layout, same graphs, same timestamps, same signature... that's not quality control. That's a copy-paste template. The "proof" is behaving like a stock photo.
Experienced buyers don't chase the highest purity number. They look for believable, varied data — because that's what real testing actually produces.
Red Flag #3: It Tells You It's Pure, But Not What It Is
Here's a gap most people never think to check, and it's a big one.
There are two different questions a COA can answer, and vendors love to answer only the easy one:
- "How pure is it?" — that's HPLC. It measures how much of the sample is your target peptide versus junk.
- "Is it actually the right peptide?" — that's mass spectrometry (MS). It confirms the molecule's identity.
Here's why both matter: a sample can be 99% pure and still be the wrong compound. A peptide missing a single amino acid can read as gorgeously pure on HPLC while being 0% of what you ordered. This isn't hypothetical — there are documented cases of people ordering one peptide and receiving a totally different one, all under a clean purity number. Pure... garbage, basically.
So a COA that shows a shiny HPLC percentage but no MS data is only telling you half the story. The good news: most real third-party tests (Janoshik included) run both at once and only flag you if the identity doesn't match. If a vendor shows purity but never identity, that's a hole worth asking about.
Quick myth-buster
You'll see guides claim "no chromatogram graph = fake." That's not true. Some legit labs — Janoshik among them — report the numbers without attaching the graph image; it's just how they format things. A missing graph on a verifiable report is fine. A missing verification path is the real problem.
Red Flag #4: "99% Pure" Doesn't Mean the Vial Is Full
This is the most misunderstood number in the whole game, and shady sellers count on the confusion.
Stay with me, because it's simpler than it sounds. "Purity" and "how much peptide is actually in the vial" are two different things:
- Purity compares your peptide to other peptide-related leftovers. It ignores everything that isn't peptide — water, salts, leftover bits from manufacturing.
- Net content is the honest one: how much actual peptide there is compared to everything in the vial.
These can be wildly different. A peptide can be 99% pure but only 70–85% net content, because the powder soaks up moisture and carries leftover salts. So a "5mg, 99% pure" vial might really shake out to:
- ~3.5–4mg of actual peptide
- a chunk of water
- a chunk of leftover salts
That's normal chemistry, not a scam. The scam is when a vendor waves the big purity number around and quietly lets you assume "99% pure" means "99% of the dose on the label." A straight-shooter publishes the net content too. One more dodge to watch for: purity measured "by weight" or some method that isn't HPLC — for real research-grade material, HPLC is the standard, full stop.
Red Flag #5: The Price Is Too Good
Real testing, clean synthesis, proper storage — none of it is free. So when a price is dramatically lower than everyone else's, the savings came out of something. Usually the vial.
A rough sense of the market, mid-2026 (per vial, research materials):
- Semaglutide 10mg: ~$40–50
- Tirzepatide 30mg: ~$60–75
- Retatrutide 20mg: ~$60–75
- BPC-157 10mg: ~$25–35
- TB-500 10mg: ~$35–45
So if a 10mg vial is going for $20, one of three things is happening. Either it's underfilled (labeled 10mg, actually contains way less — so you're paying market rate per mg and the label's just lying), or the purity is low (cheap to make a 60% product, expensive to make a 98% one), or there's no real testing and they're betting you won't check.
A vendor 10–15% under the pack? Totally plausible — bulk buying and direct sourcing do that. A vendor 40–50% under everyone? That's not a deal, that's a warning label. The old line holds up: if everybody sells a thing for $60 and one guy sells it for $20, he's either cutting the product or about to vanish with your money.
A Few Quick Gut-Checks
These aren't about the COA itself, but they travel with bad ones:
- How do they take payment? Card processors avoid this whole category, so a vendor who accepts cards has cleared a real bar — and you get chargeback protection. Crypto-or-gift-cards-only quietly strips away every protection you have. That's a choice.
- Who are they, really? A real business has a name, an address, a way to reach a human. Scammers stay anonymous so they can vanish and reopen under a new name the second they're caught. Quick move: search "[vendor name] reddit" and "[vendor name] scam." One angry post is noise. A pattern of recent complaints is your answer.
- Is everything always in stock? Real supply chains hiccup. Stuff sells out. A catalog that's said "in stock" on every single item for six months straight is either not selling much or not actually holding inventory.
What Even a Real COA Won't Tell You
Even a genuine, verified, high-purity report has blind spots. Unless it specifically says otherwise, assume it does not cover:
- Sterility — most COAs check purity and identity, not whether it's contaminated.
- Endotoxins — these survive sterilization and need a separate test most vendors skip. The few who run it on every batch and publish the number are telling you something.
- How it was actually made — a COA can't show you the conditions behind the synthesis.
- The next batch — one clean result doesn't mean the following batch is clean.
- Your specific vial — the lab tested a sample. If a vendor recycles one old report across new batches, that paper describes a vial you'll never hold. (Classic move: test one perfect batch, post it forever, ship cheaper ones against it.)
This is the entire reason batch-level testing matters. A vendor who tests every batch and gives you a matching, verifiable report is playing a completely different game than one who tested a single sample two years ago and has been screenshotting it ever since.
The 5-Minute Gut Check Before You Buy
- Ask for a batch-specific COA. Generic, templated, or years old? Stop right there.
- Verify it yourself on the lab's site — and make sure the result actually matches the product you're buying, not just "a real test exists."
- Match the batch number on the certificate to the vial it's supposed to describe.
- Confirm it has both purity AND identity (HPLC and MS).
- Sanity-check the purity number — believable and varied, not a flat 99.00% across the whole shop.
- Compare prices. 40%+ cheaper than everyone else means investigate, not celebrate.
Five minutes here saves you a wasted order and a fridge full of mystery powder.
The Boring Truth
Most vendors in this space aren't masterminds running an elaborate con. They're just lazy — buying from a middleman who bought from a middleman, marking it up, and hoping nobody actually reads the paperwork. And since there's no regulator checking their work, you're the one who has to.
The vendors worth your money are boring on purpose. They test every batch. They occasionally run out of stock. They show you purity and identity and content. They answer your verification questions instead of getting weird about them. They don't promise miracles — they just publish a real, checkable number and ship the vial that matches it.
You're not trying to find perfection. You're trying to skip the bottom tier that's careless or dishonest, and spot the few who do it right. Real vendors can be checked. These five flags are how you check them.