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Equipment & Quality

Certificate of analysis

A document from a laboratory confirming the identity, purity, and quality of a peptide batch. Should include HPLC purity percentage, mass spectrometry confirmation, and endotoxin levels. Essential for verifying peptide quality.

Frequently Asked Questions

What is Certificate of analysis?
A document from a laboratory confirming the identity, purity, and quality of a peptide batch. Should include HPLC purity percentage, mass spectrometry confirmation, and endotoxin levels. Essential for verifying peptide quality.
Why is Certificate of analysis important in peptide research?
Certificate of analysis relates to the tools and quality standards that ensure peptide safety and efficacy. Proper equipment and testing are critical for accurate dosing, contamination prevention, and verifying peptide authenticity.

Related Terms

HPLC (high performance liquid chromatography)

An analytical technique that separates, identifies, and quantifies components in a mixture. Used to determine peptide purity — results are reported as a percentage (e.g., 98% purity by HPLC).

Mass spectrometry

An analytical technique that measures the mass-to-charge ratio of molecules. Used to confirm peptide identity by verifying molecular weight matches the expected sequence. Essential for quality control.

Purity percentage

The proportion of the desired peptide in a sample, determined by HPLC analysis. Research-grade peptides are typically 95–98% pure; pharmaceutical-grade exceeds 99%. Higher purity reduces the risk of adverse reactions.

Third-party testing

Independent laboratory analysis of a peptide by a facility not affiliated with the manufacturer. Provides unbiased verification of purity, identity, and absence of contaminants. A hallmark of reputable peptide suppliers.

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