COAs

Our Quality Verification Standard

Star Valley Peptides is a direct source manufacturer. Every batch of peptide we ship is backed by independently verifiable documentation — not self-reported data.

What Every Batch COA Includes

Batch number — matches the vial label exactly
HPLC purity — with full chromatogram, not just a percentage
Mass spectrometry (MS) — confirms molecular identity
Endotoxin result — LAL test, reported in EU/mg
Water content — Karl Fischer titration
Net peptide content — actual peptide mass per vial
Retest date — stability documentation

Third-Party Testing — Independently Verifiable

Most release tests are conducted by ISO/IEC 17025 accredited third-party laboratories (including Janoshik and Vanguard Laboratory). Each third-party COA carries a unique serial number or QR code that links directly to the original report on the lab's own portal.

This means you can verify our COA without taking our word for it.

How to Verify Your COA

QR code / serial number check — Scan or enter the code on the issuing lab's website. You will see the original unmodified report directly from the laboratory.
Batch number matching — Confirm the batch number printed on your vial matches the COA exactly.
Independent re-testing — Send a sample from your received batch to any laboratory you choose. If results deviate from our COA by more than 1% purity, we cover the testing cost and issue a full refund.

Additional Quality Commitments

Reference samples retained for every batch for a minimum of one year past the retest date — available for joint re-testing on request.
For orders $10,000+: we coordinate simultaneous shipment to your preferred third-party laboratory at the time of your order dispatch.
Custom testing available on request — additional impurity profiling, peptide sequencing, or lab-specific protocols.
GMP-aligned verification available for premium research partners: supplier COA + incoming QC testing + periodic full analysis.
Unconditional return and refund if verified purity falls below 99%.