Seven checks. Every batch. Published.
Purity, content, identity, heavy metals, sterility, endotoxin and batch conformity — verified by an accredited U.S. laboratory before any vial leaves the facility.
The Panel
What we test for, and how.
Each method below is run per-lot. Limits reflect our internal release specification — typically tighter than pharmacopeial minimums.
Purity
Reverse-phase HPLC quantifies the target peptide against certified reference material, separating it from impurities and process residuals.
- Release limit
- ≥ 99.0%
- Instrument
- HPLC with UV/DAD detection
Content Verification
Mass and concentration are verified against the labeled potency, so the vial contains what the label states.
- Release limit
- Labeled potency confirmed
- Instrument
- Amino acid analysis
Identity Confirmation
Mass spectrometry confirms the exact molecular structure and detects truncated or modified sequences.
- Release limit
- Matches theoretical mass
- Instrument
- Mass spectrometer
Heavy Metals Screening
Inductively coupled plasma mass spectrometry screens for lead, arsenic, cadmium and mercury below USP <232> thresholds.
- Release limit
- Below USP <232> limits
- Instrument
- ICP-MS
Sterility Testing
A USP <71> compliant sterility screen is run on every fill.
- Release limit
- No growth
- Instrument
- Membrane filtration
Endotoxin Testing
Limulus amebocyte lysate assay quantifies bacterial endotoxin for cell-culture compatibility.
- Release limit
- < 0.5 EU/mg
- Instrument
- LAL assay
Batch Conformity Verification
A final third-party review confirms every result matches the lot's release specification and that the published COA is true to the vial.
- Release limit
- Matches release spec & COA
- Instrument
- Accredited U.S. laboratory
Chain of Custody
From synthesis to shelf, every sample is tracked.
Each lot is assigned a unique identifier at the point of synthesis. That ID follows the material through purification, lyophilization, fill, and every test point — and is printed on the vial label and the COA. Anyone can verify the chain via the lot lookup tool.
- LOT-2487
Synthesis complete
SPPS, 32 coupling steps
- LOT-2487
RP-HPLC purification
Pooled fractions ≥ 99.4%
- LOT-2487
Lyophilization
Residual H₂O 3.1%
- LOT-2487
Independent release panel
All checks pass
- LOT-2487
Fill & seal
Argon-purged headspace
- LOT-2487
COA published
Available on product page
FAQ
Common questions about our testing
Who performs the testing?
Accredited U.S. laboratories perform the identity, purity and content assays. Our internal QC repeats HPLC on every lot as a release gate.
When is the COA published?
Before the lot is released to fulfillment. If a lot has no COA on its product page, it cannot ship.
What happens if a batch fails?
It is quarantined and destroyed. We do not downgrade, re-sell, or sub-brand failed material.
Can I see raw chromatograms?
Yes — every published COA links to the full HPLC trace and mass spectrum as PDFs.
