Every Cellovate batch is analysed by an independent third-party laboratory before it leaves the facility. Knowing how those results are built — and why we do not circulate the reports themselves — is what this guide covers.

The chromatogram

The chromatogram is the graphical representation of the separation of the sample's compounds via high-performance liquid chromatography (HPLC). A single sharp, well-defined peak at a stable retention time indicates a homogeneous substance. Multiple secondary peaks or a broad, poorly defined peak suggest the presence of impurities or synthesis byproducts.

Purity (%)

Expressed as a percentage, HPLC purity corresponds to the area of the main peak relative to the total area of all detected peaks. A result ≥99% is considered the standard for serious research use. This figure alone is not sufficient, however: it must be read alongside the chromatogram to verify that no significant peak was omitted from the calculation.

Mass spectrometry confirmation (LC-MS)

Mass spectrometry confirms the molecular identity of the compound by measuring its exact mass, compared to the expected theoretical mass. This step, distinct from the purity measurement, is what guarantees that the compound analyzed is indeed the one claimed — and not an analog or degradation product with a similar retention time.

Complementary tests

  • Water content — affects the stability of the lyophilizate and the accuracy of the actual dosage.
  • Peptide content (assay) — verifies that the amount of active peptide matches the amount stated on the label, independent of chemical purity.
  • Endotoxins — relevant for any use in cellular models or in-vivo research.
  • Heavy metals and residual solvents — traces from the synthesis process, to be quantified rather than ignored.

What a good COA should indicate

  • A specific batch number, traceable to the tested sample
  • The test date and the laboratory or entity that performed the analysis
  • The analytical method used (reverse-phase HPLC, LC-MS, etc.)
  • Precise numerical results, not just a "conforms" statement

Why Cellovate does not publish its reports

A certificate of analysis is a PDF, and a PDF travels. Reports issued to legitimate suppliers are routinely lifted, rebranded, and attached to unrelated material by sellers who never tested anything. Publishing ours would hand those sellers a credential for products we did not make — and would make our own batch numbers impossible to distinguish from counterfeits carrying the same document.

So the analysis happens on every batch, by an independent laboratory, and the results stay internal. What we publish instead is what the analysis governs: the compound, the dosage, and the batch that ships to you.

Research use only

This article is provided for methodological purposes regarding the interpretation of analytical results in a laboratory research context. It does not constitute a guarantee of compliance for any particular batch or supplier.