Peptide
A short chain of amino acids linked by peptide bonds, smaller than a protein. Many peptides play a biological signaling role.
COA (Certificate of Analysis)
An analysis certificate issued by an independent laboratory, attesting to the purity and identity of a product batch. See our guide to reading a COA.
HPLC
High-Performance Liquid Chromatography — an analytical technique used to separate and quantify the compounds in a sample, in particular to measure the purity of a peptide.
LC-MS
Liquid Chromatography–Mass Spectrometry — a combination of liquid chromatography and mass spectrometry, used to confirm the molecular identity of a compound.
Lyophilization
A cold dehydration process that turns a peptide into a stable powder, making it easier to transport and store before reconstitution.
Reconstitution
The step of dissolving the lyophilized powder in a solvent (usually bacteriostatic water) to obtain a usable solution.
Bacteriostatic Water
Sterile water containing a preservative (typically 0.9% benzyl alcohol), used to reconstitute lyophilized peptides.
GLP-1 (Glucagon-Like Peptide-1)
A hormone receptor involved in regulating appetite and blood glucose. A target of many metabolic research peptides (Retatrutide, Cagrilintide...).
GIP (Glucose-dependent Insulinotropic Polypeptide)
Another hormone receptor involved in insulin sensitivity, often targeted together with GLP-1 by triple-agonist peptides.
GHRH / GHRP
GHRH (Growth Hormone-Releasing Hormone) and GHRP (Growth Hormone-Releasing Peptide) are two classes of compounds that stimulate growth hormone secretion through distinct, complementary mechanisms.
Research Use Only (RUO)
A label indicating that a product is intended exclusively for laboratory research, not for human or animal consumption. See our Research Use Only page.
Batch Number
A unique reference assigned to each production batch, used to look up the corresponding COA and ensure product traceability.