• Rigorous Testing, No Exceptions: Every batch is 3rd-party tested for purity, weight, and toxins—so you can shop with total confidence.
• Priced Right: As a family business, we keep costs low and pass the savings directly to you.
• Here for You: Fast shipping and real human support, every single time.

We source from several domestic and international suppliers with whom we have longstanding relationships.

Research peptides are short chains of amino acids used in vitro (cell culture) and analytical (mass spec, HPLC) research to probe biological pathways. They are strictly not for human or veterinary use.

Peptides are short chains of amino acids that act like highly specific messengers in the body: they bind to particular receptors on cell surfaces, triggering processes such as hormone release, metabolism changes, or tissue repair. Because each peptide’s sequence determines exactly which receptor it fits, researchers can use them to study and control biological pathways with great precision.

Pharmaceutical peptides meet clinical GMP and regulatory dossiers; research peptides (RUO) are tested for purity but not manufactured under clinical GMP or NDA requirements.

Yes. All products are labeled “For Research Use Only (RUO)” and are not approved for human or animal administration.

No prescription is required. Our peptides are sold solely for laboratory research.

We employ a variety of tests to ensure our peptides are pure and contaminant-free
1. High-Performance Liquid Chromatography (HPLC): Confirms purity and weight.
2. Inductively Coupled Plasma Mass Spectrometry (ICP-MS): Confirms that our peptides are free from heavy metals.
3. Endotoxin Assay: Ensures our peptides are free of endotoxins, also known as lipopolysaccharides (LPS).

A COA is a lab report detailing test results (purity, mass, contaminants, etc). You can download a peptide’s most recent COA directly from the product page or browse all COAs in our centralized COA Library.

All peptides meet a minimum of 99% purity (HPLC).

Your order will be processed  within 2 business days from our East Coast warehouse and shipped with UPS or FedEx Ground (2-5 business days). As soon as it’s on the way, we’ll share tracking details so you can follow along.

At this time, we only ship to street addresses within the United States. We do not ship to PO boxes or international addresses.

Standard UPS and FedEx Ground rates apply and are calculated at checkout.

Orders above the free shipping threshold will automatically have free shipping applied.

We accept all major payment methods.

Yes — our volume discount program rewards larger order quantities. The discounts will automatically populate within your shopping cart.

We are serious about customer satisfaction. If you are not happy with your order, please reach out within 30 days and we will replace or refund your order. 

Please reach out to hello@honestpeptide.com with your order number, a brief description of the issue and, if possible, photos of the problem.

For bio-safety reasons, we do not accept returns. However, if you have any issues with your order, don’t hesitate to email us at hello@honestpeptide.com and we will do our best to resolve the issue or provide a refund. 

Store sealed vials at –20 °C (freezer). Protect vials from moisture and light.

Keep at 2–6 °C (refrigerator) and use within 4–8 weeks.

Under ideal conditions, lyophilized peptides last up to 2 years. Reconstituted peptides should be used within 4-8 weeks