All products sold by Research Purpose Labs are strictly for laboratory and biomedical research purposes only. They are not intended for human consumption, diagnostic, therapeutic, or veterinary use. These products have not been evaluated or approved by the FDA or any other regulatory agency. By purchasing, you confirm that you are a qualified researcher or institution and agree to use the products in accordance with all applicable laws and regulations.

Research peptides are short chains of amino acids (typically 2–50) that are synthesized in laboratories for scientific and experimental purposes. They are designed to mimic naturally occurring peptides or create novel sequences to study specific biological processes, such as hormone regulation, cell signaling, tissue repair, metabolism, or immune response.

Important Note: Research peptides are sold for research purposes only and have not been evaluated or approved by the FDA (or equivalent regulatory bodies) for medical, diagnostic, or personal use.

We accept two ACH (bank-to-bank) payment options and one Credit/Debit card option.

No. We are a supplier of compounds intended strictly for laboratory and biomedical research. We do not provide instructions or information on the use of our products. Our products are not intended for human consumption.

Our peptides come in a lyophilized (freeze-dried) powder form. They do not ship in liquid form and must be reconstituted with bacteriostatic water prior to use in research.

Shipping is $9.99 for orders with a subtotal under $199 (after coupons/discounts). Shipping is free for orders with a subtotal over $199 (after coupons/discounts).

Orders typically ship within 1-2 business days after payment processing is finalized. Once shipped, estimated delivery time is 3-5 business days. Payment processing times vary depending on the payment method chosen.

We currently ship exclusively within the United States. We apologize for any inconvenience.

Due to our strict quality standards and the nature of our products, we cannot accept returns. If your order arrives with missing, incorrect, or damaged items, please contact our Customer Service at [email protected] (Mon-Fri, 9am-4pm PST). Our team will do our best to assist you promptly.

Orders may only be canceled before they ship. Once an order has shipped, cancellations are not possible.

Our peptides are kept in cold storage to maintain potency. All raw materials are tested to ensure high potency and purity.

Yes, we partner with an independent third-party laboratory in the US for quantitative and qualitative testing. Test results are posted on our site as they become available.

Our peptides are supplied in a lyophilized (freeze-dried) form, which provides excellent stability at room temperature. They remain stable and are not subject to degradation during the shipping process. A temperature-controlled environment is only required after reconstitution with bacteriostatic water or another appropriate solvent.

Lyophilized peptides typically have a shelf life of 2-3 years when stored properly in a cool, dry place away from light. Once reconstituted, most peptides remain stable for 14-28 days when refrigerated.

Our Buy 1 Get 1 Half Off deal applies to all items with no code required. Simply add two of the same item to your cart and the 50% discount will be automatically applied to the second item at checkout.

The two items must be the exact same product — mixing different products is not allowed.

Yes. We offer a 30% bulk discount on orders containing 5-9 of the same item, and a 35% discount on orders containing 10 or more of the same item.

No, discounts cannot be combined on the same transaction. You cannot combine the Buy 1 Get 1 Half Off deal with any other discounts or offers. (Note: The bulk discount is generally more advantageous than Buy 1 Get 1 Half Off.)