Third-Party Lab Tested

COA With Every Batch

Ships from Arizona

Research Use Only · 21+

PEP BROS

LLC · RESEARCH PEPTIDES

Help center

Frequently asked questions

Answers about our products, documentation, and ordering. Our support covers chemical specifications and order questions only.

Products

Products and documentation

Are your products for human use?

No. All products are sold strictly for laboratory and in-vitro research. They are not for human or veterinary consumption and are not drugs, foods, supplements, or cosmetics.

Where do I find the Certificate of Analysis?

Each product page links the certificate for the lot currently in stock. You can also search our Lab Results page by product name or by the lot number printed on your vial.

What form are products supplied in?

Products are supplied as lyophilized (freeze-dried) powder in sealed, lot-labeled vials. Each listing states the recommended storage conditions for the unopened product.

Can you advise on how to use a product?

No. We do not provide dosing, preparation, mixing, administration, or protocol guidance of any kind. Our support is limited to chemical attributes such as sequence, molecular weight, purity, solubility data, and storage conditions.

Ordering

Purchasing and shipping

Who can purchase?

Purchasers must be 21 years of age or older and must purchase for legitimate laboratory research. By ordering, you agree to our Research Use Only Terms of Sale.

Why would an order be cancelled?

We cancel and refund any order where the order notes, communications, or other information indicate that products are intended for human or veterinary use, or where the purchaser does not meet our age and research-use requirements.

Where do orders ship from?

Orders ship from Arizona. Processing and delivery times are shown at checkout and in your order confirmation email.

What is your return policy?

Please see our Terms of Sale for return and refund conditions. Contact us with your order number if a product arrives damaged.