Peptide basics: identity, quantity and research evidence

What is a peptide?

A peptide is a chain of amino acids joined by peptide bonds. Sequence and chemical modifications influence its behaviour. Similar names can describe different materials, so exact identity matters more than a broad category.

Start with the research question

Read what was measured, in which model, and against which comparison. A change in a cellular marker is a different finding from an improvement in a human clinical outcome.

Keep quantities separate

Mass, concentration, and volume describe different things. A vial label gives a quantity; concentration relates it to a volume. One milligram equals 1,000 micrograms. A calculator checks arithmetic, not suitability or safe use.

Read beyond the name

DAC and no-DAC forms, native peptides and analogues, and different blend ratios are distinct materials. NAD+ and 5-Amino-1MQ are in our catalogue but are not peptides.

Quick glossary

mg / μg

1 mg = 1,000 μg. These are mass units.

mg/ml

Mass per volume; not the total mass in a vial.

COA

Certificate of analysis: check the exact lot, method and scope.

Preclinical

Cell or animal research does not establish a human treatment outcome.