01
Numbered
Every batch gets its own lot number before anything else happens.
PrecisionPep · Research peptides
Precision starts at the molecule.
Built one residue at a time.
Then tested by a lab that isn't us.
Purity by HPLC. Identity by mass spec. Endotoxin, checked.
One lot. One report. Yours to check.
Every vial carries a lot number that opens its own independent test report.
PrecisionPep · Research peptides
One lot. One report. Yours to check.
Research peptides, every lot tested by an independent lab for purity, identity, and endotoxin.
Why this exists
You've seen the photoshopped COAs.
- 01One report reused across ten products.
- 02A vial that tests under its label.
- 03A seller who stops answering.
We read the same threads you did. So PrecisionPep runs on one rule: every lot proves itself.
How we test
Three steps. Every lot. No exceptions.
02
Tested outside
Samples from every lot go to an independent, ISO/IEC 17025 accredited lab. HPLC checks purity. Mass spec confirms identity. Endotoxin is measured.
03
Matched
The lot number on your vial is the lot number on the report. Same number, same batch.
Sample · Lot 1934M002C100.0 min
Hold to run a sample.
- Identity · confirmed by MS
- Endotoxin · tested
- Lot · matched to report
Illustrative trace. Every lot's real chromatogram is in its report.
Reports
Read a report the way a skeptic would.
Every PrecisionPep report shows the same lines. Here's what to check on each one.
- Lot number
- 1934M002C1 Match it to the number on your vial.
- Testing lab
- ISO/IEC 17025 An accredited, independent lab, named on the report.
- HPLC
- Main peak Look for one sharp main peak.
- Mass spec
- Observed vs expected Observed mass should match expected mass.
- Endotoxin
- Measured Measured for every lot.
- Test date
- Per lot Recent, and specific to this lot.
Layout shown for illustration. Values come from each lot's own report.
About
Ten years of peptide research. One standard for every lot.
PrecisionPep is a US-based team that has worked in peptide research since 2016. The catalog we're opening comes out of that work, and out of one problem we kept running into: research peptides sold on trust, with paperwork nobody can check. So every lot gets a number, every number gets an independent report, and every report covers purity, identity, and endotoxin.
Independent lab, every lot
We don't test our own work. An ISO/IEC 17025 accredited outside lab does, and its name is on the report.
Lot number on every vial
The number on the label is the number on the report.
Research use only
No health claims, no dosing advice, no exceptions.
FAQ
The questions people actually ask.
Is PrecisionPep legit?
We've worked in peptide research since 2016, but don't take our word for it. Judge us by the paperwork. Every lot has an independent report covering purity, identity, and endotoxin, and the lot number on your vial matches it.
Is the report for my vial, or a recycled one?
Yours. Reports are issued per lot, and every vial carries its lot number.
Who does the testing?
An independent third-party lab accredited to ISO/IEC 17025, not us. The lab and its accreditation are named on every report.
Can I use these on myself?
No. PrecisionPep products are sold for laboratory research only. They are not for human or veterinary use.
Where do you ship?
We're based in the United States and plan to ship within the US and to EU countries. Full shipping terms go up when the catalog opens.
When can I order?
We're opening soon. Join the list and we'll email you the day the catalog opens.
Early access
Be first to see the catalog.
People on the list get the catalog and the first lot reports before anyone else.