Retatrutide — Research Peptide (Lyophilised, HPLC ≥99%)

Lyophilised Retatrutide vials should be stored at -20°C for long-term stability, or refrigerated at 2–8°C if intended for use within 30 days. Once reconstituted with bacteriostatic water, the solution is generally stable refrigerated at 2–8°C for up to 28 days under sterile handling. Always allow vials to reach room temperature before opening to prevent condensation, and protect from direct light at all times.

Reconstitute the lyophilised powder with bacteriostatic water (commonly 1–3 mL per 5–10 mg vial, depending on the working concentration required). Inject the diluent slowly down the inside wall of the vial, do not inject directly onto the cake, and gently swirl until fully dissolved. Do not shake. Bacteriostatic water is sold separately and is recommended for laboratory reconstitution work over plain sterile water for solutions stored beyond 24 hours.

Retatrutide ships at a typical HPLC purity of ≥98%. The Certificate of Analysis confirms peptide identity (sequence, molecular formula and weight), HPLC purity, MS or LC-MS identity confirmation where applicable, appearance of the lyophilised cake, and a batch / lot reference. The latest COA is downloadable on the product page.

Orders placed before 3pm Mon–Fri ship the same working day via tracked next-day courier (Royal Mail or DPD). Vials are packed in temperature-buffered, discreet outer packaging and arrive in 1–2 working days for UK addresses. Tracking is emailed at dispatch.

Yes. Every batch is verified by HPLC for purity and identity, with mass spectrometry confirmation where applicable. An in-house Certificate of Analysis is published on the product page, and we routinely commission independent third-party testing on batches at random to confirm internal results. Researchers requiring batch-specific external verification can request the lot reference and arrange independent testing.

This is normal. A 5 mg or 10 mg dose of peptide is a very small mass of material and typically presents as a thin film, a small disc, or a barely visible powder at the bottom of the vial. Mass cannot be reliably verified by weighing the vial, the glass, stopper and crimp seal dwarf the peptide weight. The proper verification method is analytical testing (HPLC / MS), as referenced in the COA.

Yes. This product is supplied as a research-grade compound, intended exclusively for in-vitro laboratory research. It is not a medicine and is not intended for human or veterinary use, ingestion, injection, or use in food, drugs or cosmetics. Buyers are responsible for handling, storing and using the material in compliance with their institutional and local laboratory safety standards.