Third-party COA verification · how to read it
Janoshik COA verification, and how to actually read a test.
Janoshik Analytical is one of the third-party labs research buyers most often see named on peptide certificates. But a logo on a PDF proves nothing on its own — what matters is whether the report ties to your lot and what its numbers mean. This page explains how independent COA verification works, how to spot a faked report, and where Titan's documentation stands.
What a third-party lab actually tests
Independent labs like Janoshik typically run HPLC for purity (the main-peak percentage of the intended peptide versus impurities) and mass spectrometry for identity (confirming the molecular weight matches the target compound). Some also test for sterility, endotoxin, or net peptide content. Purity and identity are the two numbers that matter most for a research reagent.
How to read a COA →The verification that counts: lot matching
A genuine COA references the specific lot or batch code printed on the vial you hold — not a generic 'representative' result. The single most important check is whether the lot code on the report matches the lot code on your unit. A report with no lot code, or one that never matches the physical vial, is documentation theatre regardless of which lab name appears on it.
COA-verified supplier →How COA reports get faked
Common manipulations: reusing one real report across many unrelated batches, editing the purity number on a genuine PDF, cropping out the lot code, or citing a lab that never tested that material. This is why verifying directly with the testing lab — or insisting on a lot-matched report you can cross-check — beats trusting a screenshot in a product gallery.
COA red flags to watch →What 'good' looks like on the page
A usable report shows: the compound name and CAS, the lot/batch code, an HPLC chromatogram or a stated main-peak purity percentage, a mass-spec result confirming the molecular weight, the test date, and the lab's identity. Missing any of the first three should stop the order until they are supplied.
Current-lot COA checklist →Where Titan stands, stated plainly
Titan supplies a lot-matched release sheet on request — keyed to the lot code on the unit you receive — showing an HPLC main-peak purity result against a ≥99% internal target and a mass-spec identity confirmation. Titan does not claim to publish a third-party Janoshik certificate for every lot; ask for the documentation for your specific lot and verify it against the criteria above before a significant order.
See the testing workflow →Verify, don't take it on faith
The honest position on any vendor — Titan included — is that you should verify rather than trust a brand name on a PDF. Use the checklist, request lot-matched documentation, and if a report cites a named lab, confirm it ties to your lot. Healthy skepticism is the correct default in the research-reagent market.
Peptide supplier checklist →The detail, in plain terms
A third-party report, read correctly.
Janoshik and similar labs run the analytics; your job is to confirm the report ties to your lot and that its numbers clear the bar. The lab name is a starting point, not a guarantee.
- HPLC purity
- Main-peak % of the intended peptide vs impurities — want ≥99% target.
- Mass spec
- Confirms molecular weight matches the target compound's identity.
- Lot match
- Report's lot/batch code must match the code on your vial — the key check.
- Red flags
- No lot code, reused report, edited purity number, lab that never tested it.
- Titan posture
- Lot-matched release sheet on request (HPLC + MS); verify your lot's doc.
- Default stance
- Verify rather than trust a logo — request and cross-check the paperwork.
Questions researchers ask
Before you order.
- What is Janoshik COA verification?
- Janoshik Analytical is a third-party laboratory often named on peptide certificates of analysis. 'Janoshik COA verification' refers to checking that a peptide's purity (by HPLC) and identity (by mass spectrometry) were independently tested and that the report genuinely ties to the lot you received. The lab name alone is not proof — the report must match your lot code and clear the purity bar.
- How do I know a Janoshik COA is real?
- Confirm the report shows the lot/batch code printed on your vial, a stated HPLC main-peak purity percentage (or chromatogram), and a mass-spec identity result, with a test date and the lab's identity. If a report has no lot code, reuses one result across batches, or cites a lab that never tested that material, treat it as unverified regardless of the logo. When in doubt, verify with the testing lab directly.
- Does Titan provide a Janoshik COA?
- Titan provides a lot-matched release sheet on request, keyed to the lot code on your unit, showing an HPLC main-peak purity result against a ≥99% internal target and a mass-spec identity confirmation. Titan does not claim a published third-party Janoshik certificate for every lot — request the documentation for your specific lot and verify it against the checklist before ordering.
- What purity should a peptide COA show?
- For most peptides, look for an HPLC main-peak purity at or above 98–99%, supported by a mass-spec identity confirmation. Anything below about 95%, or a report with no purity figure at all, is inadequate for rigorous research work.
- Are these peptides for human use?
- No. Research-grade peptides — and any COA discussed here — concern material supplied strictly for in-vitro laboratory work. Titan's products are not for human or animal consumption, and not for diagnostic, therapeutic, or preventative use.