GHK‑Cu (Copper Peptide) is a naturally occurring tripeptide made up of the amino acids Glycine‑Histidine‑Lysine bound to a copper (Cu²⁺) ion. It is widely studied in laboratory research for its biological roles in tissue repair, inflammation modulation, collagen synthesis, and cellular signaling pathways. GHK‑Cu has gained interest in regenerative biology studies because it appears to influence gene expression, promote extracellular matrix formation, and support cell proliferation in experimental models.

In research settings, GHK‑Cu is typically supplied as a white to off‑white lyophilized (freeze‑dried) powder. Before use in experiments, the peptide is reconstituted with a suitable sterile solvent (e.g., sterile water). Analytical testing such as High‑Performance Liquid Chromatography (HPLC) or Mass Spectrometry (MS) is used to confirm the purity and identity of the compound, and the peptide is generally produced to high purity standards suitable for laboratory research.

For storage, GHK‑Cu should be kept in a cool, dry place. The unopened lyophilized powder is typically stored at ‑20 °C or lower to preserve stability. Once reconstituted, the peptide solution should be kept in the refrigerator (2 °C to 8 °C) and used within the timeframe recommended by the supplier, while avoiding repeated freeze/thaw cycles to maintain integrity.

A Certificate of Analysis (COA) is usually provided with GHK‑Cu, confirming important quality parameters such as purity percentage, peptide identity, molecular confirmation, and storage recommendations, along with batch/lot information. GHK‑Cu is intended strictly for laboratory research use and is not FDA‑approved for clinical therapy, human consumption, or veterinary applications. It is commonly used in studies investigating tissue regeneration, wound healing, and cellular signaling pathways at the molecular and cellular level.