About PepBiotics
We publish the receipts.
Every peptide supplier claims “third-party tested.” Almost none will show you a single report. PepBiotics was built to be the exception — a lot number on every vial that pulls up its own HPLC and mass-spec certificate.
≥99%
Median lot purity, HPLC
186
Batch COAs published
2,000+
Verified reviews
ISO 17025
Independent accredited lab
Founder’s note
“Show me the COA” shouldn’t be a power move
I spent years sourcing research peptides the way everyone does — squinting at vendor listings, cross-referencing forum threads, guessing which “third-party tested” badge meant anything. The absurd part: the testing mostly does happen. Reputable suppliers run HPLC and mass spec on every lot. The reports just die in a filing cabinet.
So that’s the whole idea. Make the boring paperwork public. Put a lot number on every vial that pulls up its own certificate. Supply research-grade peptides with real analytical data, and let anyone — researcher, competitor, auditor — check our work.
“Verify us” is a much easier promise to keep than “trust us.”
Elena VossFounder — PepBiotics
Same standard on the flagship and the footnote
Whether it’s our best-selling BPC-157 or a niche bioregulator, every lot clears the identical analytical panel. No tiered testing, no “premium” line — one standard, published.
Good to know
Every lot, decoded — from synthesis to your COA
No slogans, no “trust us.” Here is the exact path every PepBiotics vial takes before its lot number ever reaches your label.
- 01
Synthesized in the USA
Solid-phase synthesis, then lyophilized to a stable powder. Each production run becomes a single traceable lot.
- 02
Purity by RP-HPLC
Reverse-phase HPLC quantifies purity and resolves impurities — the headline percentage on every certificate.
- 03
Identity by mass spec
ESI mass spectrometry confirms the molecular weight matches the target sequence. No guessing what's in the vial.
- 04
COA published to the lot
Every result is signed by Aegis Bioanalytical Laboratories and published to the vault — searchable by the lot number on your label.
What we optimize for
Four commitments we don’t bend
Radical transparency
If the testing happened, the paperwork exists — and researchers should see it. Every lot's Certificate of Analysis, published before it sells.
Analytical rigor
Identity by ESI mass spectrometry, purity by RP-HPLC, and net peptide content disclosed on every lot. No hand-waving purity figures.
Research-use integrity
Reference materials for laboratory research use only — no health claims, no dosing guidance. Sold to qualified researchers, 21+.
Cold-chain & reship guarantee
Vials ship with cold-chain handling. Damaged, mis-shipped, or cold-chain-failed orders are reshipped free within 30 days.
The receipts are one click away
The best introduction to how we work isn’t this page — it’s the library of lab reports behind every product.