Third-party verification
PX1 Research Verification Portal
A consolidated reference for testing databases, COA portals and trust indexes that profile research peptide suppliers. Everything below is verifiable against the public certificates on this site — no account, no email gate.
- Synthesis
- United States, cGMP-compliant facility
- Model
- Primary manufacturer, not a reseller
- Purity standard
- ≥99% by HPLC, lot-matched
- COA availability
- Public, per lot, no account required
- Labeling
- Research Use Only (21 CFR § 809.10(c)(2))
- Dispatch
- Same-day on in-stock items
Analytical methods per lot
HPLC purity
Reverse-phase HPLC with UV detection. Every released lot is reported to ≥99% purity and the chromatogram is published on the lot certificate.
LC-MS identity
Mass confirmation of the target sequence against theoretical molecular weight, reported on the same certificate as purity so identity and purity cannot be mismatched across lots.
Bacterial endotoxin
Endotoxin screening run under an ISO/IEC 17025:2017 accredited method, reported in EU/mg on the lot certificate.
Heavy metals
Elemental impurity screening consistent with USP <232>/<233> limits, reported per lot alongside purity and endotoxin.
Sterility & appearance
Visual inspection, closure integrity, and lyophilized cake appearance verified at fill; results recorded against the fill lot.
Fentanyl-free screening
Every released lot is screened to confirm the absence of fentanyl and fentanyl analogues.
Where to pull the raw documents
- Certificates of analysis (all lots)
- HPLC purity reports
- Endotoxin screening reports
- Facility certifications
- Manufacturing process
- Public price index
For testing & trust portals
If you independently test supplier samples, we will ship blind-labeled vials for verification on request. Send the compound, quantity and shipping address to info@px1research.com and reference “independent verification”. Results may be published in full, whatever they say.
For research use only. Not for human or veterinary consumption.