Frequently asked questions about MyPeptide research peptides.
What is a research peptide?
A research peptide is a molecule composed of amino acids linked by peptide bonds, synthesized for exclusively scientific use in the laboratory. Unlike drugs, these peptides are not approved for human consumption and are intended for researchers who study their biological properties in vitro or in preclinical models.
What is the difference between Retatrutide 10mg and 20mg?
Retatrutide R3 10mg and 20mg are identical in formulation (purity ≥99% HPLC, lyophilized, Janoshik Analytical certified). The difference is solely quantitative: the 20mg vial contains twice the active ingredient. The choice depends on the planned research volume and the experimental protocol used.
How is HPLC purity 99%+ certified?
Each batch of MyPeptide peptides is independently analyzed by Janoshik Analytical Laboratory. High-performance liquid chromatography (HPLC) analysis measures the proportion of the target molecule relative to impurities. A Certificate of Analysis (COA) is available for each batch and can be downloaded from the corresponding product page.
How to reconstitute a lyophilized peptide?
Reconstitution of a lyophilized peptide requires bacteriostatic water (sterile water containing 0.9% benzyl alcohol). Slowly inject the desired volume of water down the side of the vial—never shake, mix by gentle rotation. The reconstitution volume depends on the concentration required for your research protocol. Consult our reconstruction guide for details.
What are the storage conditions for peptides?
Lyophilized (unreconstituted) peptides can be stored at -20°C for a minimum of 24 months, or at 2-8°C for 3 to 6 months. Once reconstituted, they must be stored at 2-8°C and used within 28 days. Avoid repeated freeze/thaw cycles (maximum 3 cycles). See our conservation guide.
Do you deliver throughout Europe?
Yes, MyPeptide ships to most European Union countries: France, Germany, Belgium, Spain, Italy, Luxembourg, the Netherlands, Poland, and Portugal. Standard delivery time is 48 to 72 business hours. Packages are shipped in discreet packaging designed to protect the freeze-dried peptides during transit.
Are peptides legal to buy in Europe?
Research peptides are legally marketable in Europe when intended for scientific laboratory use. They are not classified as narcotics or controlled substances in most European countries. However, regulations vary from country to country, and it is the buyer's responsibility to verify applicable local legislation. Our products are sold exclusively for scientific research purposes.
What is GHK-Cu (Copper Peptide)?
GHK-Cu (Glycyl-L-Histidyl-L-Lysine-Copper) is a tripeptide naturally present in human plasma, saliva, and urine. It is studied for its properties in stimulating collagen synthesis, regulating inflammation, and protecting cells. Our GHKCU 50mg has a purity of ≥99%, certified by HPLC from Janoshik Analytical.
What is NAD+ and why is it being studied?
NAD+ (Nicotinamide Adenine Dinucleotide) is an essential coenzyme involved in over 500 cellular enzymatic reactions. It plays a central role in energy metabolism (mitochondrial respiratory chain), DNA repair (activation of sirtuins and PARP), and cell signaling. Its decline with age makes it a major research topic in longevity and metabolism.
How do I contact MyPeptide support?
For any questions about our products, orders, or research protocols, please use our contact formOur team responds within 24 business hours.