- 01Analytical science · 3 min read
Understanding a Peptide COA: Authenticity, Lot-Specific Testing and Limits
Learn what a certificate of analysis should document, how to evaluate its connection to a sample or lot, and what it cannot prove.
- 02Analytical science · 2 min read
How to evaluate independent peptide testing
Independent testing is useful when it answers a defined question about a traceable sample. The phrase “third party tested” is not enough to show what was measured, whether the sample…
- 03Analytical science · 2 min read
What pharmaceutical quality claims need to demonstrate
“Pharmaceutical grade” is meaningful only when it is tied to a defined specification, manufacturing context and intended product. Used alone on a research-material label, it can suggest…
- 04Analytical science · 2 min read
Why a peptide purity percentage is only one measurement
A peptide purity percentage describes a result under a particular analytical method. It should not be read as a complete inventory of everything in a container. Understanding the…
- 05Analytical science · 2 min read
Endotoxin results need a method and a context
Endotoxin testing addresses a particular contamination concern. It is distinct from identifying a peptide, measuring chemical purity or checking for viable microorganisms. A complete…
- 06Analytical science · 2 min read
A Purity Percentage Is Only One Part of a Certificate of Analysis
A certificate of analysis is a record of selected measurements on a stated sample or lot. Its value depends on traceability, appropriate methods and clear interpretation. A large purity…
- 07Safety & regulation · 2 min read
What Does “Research Use Only” Mean, and Does It Mean a Product Is Safe?
Understand what a research-use label communicates, what it does not prove, and why a research material is not automatically a medicine.
Reading journey
What did the testing actually establish?
Move from a certificate to identity, impurity profiles, endotoxin tests and the limits of quality language.
