Research Use Only FAQs
Frequently asked questions
Quick answers about our research peptides, storage, shipping, and ordering.
Are these products safe for human use?
No. Every product on this site is sold strictly for laboratory and research use by qualified professionals. They are not approved by the FDA for human or veterinary use, are not drugs, and are not intended to treat, diagnose, cure, or prevent any disease.
What is Retatrutide?
Retatrutide is an investigational peptide currently being studied in controlled laboratory environments for its biological interactions and potential applications within metabolic and peptide science. It is not approved for human use.
Do you provide a Certificate of Analysis (COA)?
Yes. COAs from our independent third-party testing lab are available on request. Email us with your order number and the lot you would like documentation for, and we will send the PDF back the same business day in most cases.
How should I store my vials?
Lyophilized (freeze-dried) peptides should be stored at -20 °C or below for long-term stability. Once reconstituted, refrigerate at 2–8 °C and use within the timeframe appropriate for that compound. Avoid freeze/thaw cycles after reconstitution.
How do I reconstitute a peptide?
Most lyophilized research peptides are reconstituted with bacteriostatic water. The exact ratio depends on the peptide and your experimental design. We do not provide reconstitution or dosing guidance for human use under any circumstance.
How fast is shipping?
We ship same or next business day after payment is confirmed. Tracked US delivery typically arrives in 2–5 business days. Overnight shipping is available at checkout.
Do you ship internationally?
Currently we ship within the United States only.
Is my order discreet?
Yes. Every order ships in plain, unbranded outer packaging. Nothing on the outside indicates the contents. Vials are protected with cold packs in an insulated mailer.
Which payment methods do you accept?
Zelle, Cash App, Chime, Apple Pay, and Bitcoin / USDT. After you place an order you will receive payment instructions by email and our team will confirm within minutes.
Is there a minimum order?
No. Order any quantity you like — we offer single vials and discounted bulk packs.
What is your return policy?
Due to the nature of research compounds, we cannot accept returns once a vial has shipped. If a product arrives damaged or incorrect, contact us within 7 days and we will resolve it.
Who should buy from Core Peptides?
Our customers are independent researchers, research foundations, university labs, and licensed professionals (MD, DO, PA, PhD). By ordering you confirm you are using these compounds for lawful research purposes only.