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Testing and certificates of analysis
A peptide is only as good as the proof behind it. Every batch we sell is checked by an independent lab, and you can read that lab's report before you order.
What every batch goes through
| Test | What it answers |
|---|---|
| HPLC (high-performance liquid chromatography) | How pure is it? HPLC separates the peptide from anything else in the vial and reports purity as a percentage. Our standard is 99% or better. |
| Mass spectrometry | Is it the right molecule? Mass spec measures the molecular weight and confirms it matches the compound on the label. |
| Batch certificate (COA) | Which batch was tested, by whom, and with what result. Each COA ties one batch to its own test results. |
Who does the testing
Certificates come from Purity Spectrum Analytics, an independent third-party lab. Each report is hosted on the lab's own site, so you can check it there rather than take a PDF on faith.
Look up a COA
Pick a compound in the COA lookup on the home page to open its report, or email sales@mpgawholesale.com with the compound and batch and we will send the matching certificate.
How to read one
Check four things: the compound name and batch match your vial, the purity figure from HPLC, the measured mass against the expected mass from mass spec, and the testing lab's name and date. Our guides go deeper:
Ready to order?
Every compound is priced in the open, by the 10-vial box. No account and no minimum: build your order and send it.
Research use only. Products are supplied strictly for in-vitro laboratory research. Not for human or veterinary use, not a drug, food or supplement.