For some of our customers, the most important quality check is independent third-party testing.
One returning customer independently submitted several Retatrutide samples for laboratory analysis, covering different specifications and testing dates. The reported purity results included:
- Retatrutide 30mg — 99.827%
- Retatrutide 20mg — 99.93%
- Retatrutide 10mg — 99.85%
For the Retatrutide 20mg sample, the independent Certificate of Analysis confirmed the sample identity and reported 99.93% purity by HPLC-UV, with a measured net content of 19.45 mg.
The same report also included endotoxin testing using a Limulus Amebocyte Lysate assay under USP <85> conditions. Both reported replicates received a Pass result, with an assay sensitivity of ≤0.05 EU/mL.
After receiving the independent results, the customer shared:
“The results came back very solid regarding identity, purity, and net content. I appreciate the consistency on this batch.”
In another message, the customer commented:
“COA for the Reta 20mg came back perfect, 99.93% pure… I will be making another order as soon as I can.”
For us, this type of feedback is especially useful because the samples were independently submitted and tested by the customer rather than relying solely on supplier documentation.
We support customers who want to independently verify their research materials and can provide available batch COA documentation for reference.
Need a COA for a specific research product or batch?
Contact us to check available documentation.
For Research Use Only. Not for human or veterinary use.