Resources/Lab Testing
Lab testing
& certificates of analysis
Quality you can verify, not just take on faith. Every production lot is tested for identity and purity through an independent third-party HPLC program before it ships — and a lot-specific Certificate of Analysis is available on request for any batch you receive.
≥ 98%
HPLC purity, every lot
3rd-party
Independent HPLC program
Per-lot
Certificate of Analysis
0
Out-of-spec lots shipped
What every lot is tested for
Four checks, each answering a different question. Identity proves what the molecule is; purity proves how much of it is the target; endotoxin and sterility characterize the material in solution.
Identity — Mass Spectrometry
MALDI / ESI-MSConfirms the compound is the exact peptide on the label. The measured molecular weight must match the theoretical mass within ±1 Da.
Why it matters — Purity alone is meaningless if the molecule is the wrong peptide. Mass-spec identity is what proves the vial contains what it claims.
Purity — HPLC
≥ 98% by areaHigh-performance liquid chromatography separates the target peptide from synthesis impurities and reports the purity as a percentage, with the chromatogram attached.
Why it matters — The single most-quoted quality number. We hold every lot to a minimum of 98%, and the chromatogram lets you see the impurity profile — not just trust a figure.
Endotoxin — LAL Assay
EU / mgThe Limulus Amebocyte Lysate assay measures bacterial endotoxin, a contaminant that survives sterilization and is not detected by purity testing.
Why it matters — Endotoxin is a real risk for anything handled in solution. Testing it is a deliberate step, run on reconstituted samples.
Sterility
Reconstituted samplesScreens reconstituted material for microbial contamination introduced during handling or fill.
Why it matters — Complements endotoxin testing to characterize what the material looks like once it is in solution — the state in which it is actually used.
How the verification program works
From synthesis to the COA in your inbox, every lot moves through the same release path. Nothing ships until it passes.
01
Synthesis & in-process control
Each compound is synthesized and sampled per lot. A batch is a discrete production run with its own lot number — the unit everything downstream is tracked against.
02
Independent third-party HPLC
Lot samples are sent to an independent laboratory for HPLC purity and mass-spec identity. An outside lab has no incentive to inflate the result.
03
Endotoxin & sterility
Endotoxin (LAL) and sterility are run on reconstituted samples so the material is characterized in the state it is actually handled.
04
Release or reject
A lot ships only if it meets specification — identity confirmed and purity ≥ 98%. Out-of-spec lots are rejected and never reach customers.
05
Per-lot COA on request
The Certificate of Analysis is matched to your exact batch code. Request it any time with your order number and the code printed on the vial.
Your batch, your paperwork
Request your Certificate of Analysis
Send your order number and the batch code printed on the vial, and we’ll return the lot-specific COA for that exact batch. New to reading one? Our guide walks through every section and the red flags to watch for.
Frequently asked questions
Are your peptides third-party tested?
Yes. We operate an independent third-party HPLC verification program. Every production lot is tested for identity and purity before release, and a lot-specific Certificate of Analysis (COA) is available on request for any batch you receive.
What purity are your peptides?
Every production lot is tested for identity and purity to a minimum of 98% by HPLC before it is cleared for sale. Lots that fall below specification are rejected and never ship to customers.
How do I get the Certificate of Analysis for my order?
Email support with your order number and the batch code printed on the vial, and we will send the lot-specific COA for that batch. Certificates are matched to the exact lot you received — not a generic document that applies to every batch.
What tests are on the Certificate of Analysis?
A complete COA identifies the lot (peptide name, lot number, synthesis and expiry dates) and reports HPLC purity with the chromatogram, mass-spectrometry identity confirmation, and — where applicable — endotoxin and sterility results. Learn how to read each section in our guide to reading a peptide COA.
Do you test for endotoxin and sterility?
Endotoxin (by LAL assay) and sterility testing are run on reconstituted samples in addition to identity and purity. These matter most when a compound is handled in solution, which is why they are part of the release process rather than an afterthought.
Why does independent third-party testing matter?
An independent laboratory has no commercial incentive to inflate a purity number, so its result is more credible than in-house QA alone. Third-party HPLC and mass-spec data are the difference between a supplier claiming quality and a supplier proving it batch by batch.
Keep reading
Disclaimer
Testing verifies the identity, purity, and quality of the compound as shipped; it is not a claim of safety or efficacy in any living system. Canada Peptides compounds are sold for research use only, and nothing on this page is medical advice. Certificates of Analysis describe a specific lot on a specific date and do not guarantee results in any application.