COA
Test reports, shown before you ask.
Every lot has its own certificate of analysis with HPLC purity and MS identity, and every order ships with the COA of its lot. Below: our batch COAs, third-party test reports and reports customers commissioned on our products — the first page of each, at low resolution. The full, clear copy comes from our sales team.
COA library
Every report, by kind.
Previews show the first page only, at a resolution where small print cannot be read; numbers, dates, names and signatures are covered. The full, clear copy comes from our sales team.
Batch COAs
216Our certificate for each released lot: HPLC purity and MS identity.
Third-party test reports
20Reports from a third-party analytical laboratory in Tianjin, China: HPLC purity and MS identity of the sample tested.
Reports shared by customers
3Reports that customers commissioned from an independent laboratory on our products and allowed us to show: purity and content per vial.
Independent testing
Test it yourself. If it fails, you get a full refund.
Send any vial from your order to an independent laboratory of your choice. If the report shows the product does not meet the specification on its COA — purity below the stated minimum, or an identity that does not match — share the report with our sales team and we refund that product in full.
How the refund works →How to read a report
Purity and identity, from the charts.
HPLC separates the sample and reports the main peak as a share of the total peak area: that is the purity. Mass spectrometry confirms identity: the measured ion must match the molecule's mass. These are the two charts from one of the third-party reports above, as printed.
Five questions before relying on a document
- Does the product identity match?
- Does the content or specification match?
- Is the lot explicitly linked?
- Does the stated method answer the review question?
- Are the limitations on the record understood?
From a third-party report · Retatrutide 50 mg · HPLC purity / MS identity
![Mass spectrum (ESI+) from the same report: the strongest signal at m/z 1183.9, the [M+4H]4+ ion of Retatrutide](/coa-charts/retatrutide-ms-1600.webp)
Both charts as printed in the report of a third-party analytical laboratory in Tianjin, China, cropped to the plots.
Research-material inquiry
Ask for a full report or a batch COA.
The reply covers the material, scale, destination and records you name — no account, cart or payment needed.