What this is, and how to use it
Two minutes to understand it. Five to use it better than most people ever will.
“Is the vendor I'm about to buy from telling the truth?”
That's the question this site answers. We buy their product anonymously, send it to an independent lab, and publish what the lab found next to what the vendor claimed — same batch, same vial.
How it works, in three steps
- We buy blind. Orders are placed like any customer's, through anonymous addresses and rotated payment methods. No vendor may send us samples. If they don't know a vial is being tested, they can't pick a good one.
- We freeze their claim. The moment we order, the vendor's published COA is archived with a hash and a timestamp. That's what stops a vendor quietly swapping the document later.
- An independent lab tests it. Purity, identity, net content, endotoxin, sterility and a fentanyl screen. Both documents publish together.
The full protocol, verdict thresholds and score weights live on How We Test.
How to read a result like a pro
Four things do most of the work:
1. The verdict is a rule, not an opinion
Pass, underdosed, or fail come from published thresholds applied to lab measurements. Every verdict carries an icon and a word, never just a colour.
2. The gap matters more than the number
A vendor claiming 99.5% and measuring 97.6% is a small, honest rounding. One claiming 99.6% and measuring 87.4% is something else. On the comparison chart, the longer the line between the amber dot and the cyan dot, the bigger the overstatement.
3. Cheap and cheap-per-milligram are different things
This is the one that saves people real money. A vial that costs less but contains 20% less peptide is not cheaper — it's more expensive per milligram you actually receive.
4. One pass is not a guarantee
A result describes the batch we bought, on the date shown. Batch-to-batch variance is real, which is why every vendor goes back into the queue and scores decay without a fresh test.
Your first five minutes as a member
- Look up the vendor you already buy from. Most people start here, and it's the fastest way to know whether this is worth your money.
- Compare a peptide you use across every tested supplier, sorted by best real value — not sticker price.
- Follow that vendor and peptide so you're emailed the moment a new result lands.
- Cast your vote for the next testing cycle. Top requests go to the lab, funded by memberships.
- Read one full comparison end to end — including the red flags on the vendor's own COA. After that you'll spot a bad COA anywhere, on any site.
Glossary
The terms that appear on every result:
- COA
- Certificate of analysis — a lab document stating what a product contains.
- Blind buy
- A purchase made anonymously as an ordinary customer, so it can't be cherry-picked.
- HPLC
- High-performance liquid chromatography, the method used to measure purity.
- Mass spec (LC-MS)
- Confirms the substance is what it claims to be, and how much of it is present.
- Endotoxin
- Bacterial contamination. Purity testing alone would never reveal it.
- Verified $/mg
- Price paid ÷ milligrams actually measured. The real cost of what you received.
- Pep Score
- A published 0–100 supplier score: 70% quality (pass rate, purity accuracy, label accuracy, transparency) and 30% verified value.
- Provisional
- A supplier with only one tested batch — not enough evidence for a score.