High Purity Research Peptides
Empowering your discovery with 99% purity levels, verified by independent third-party COA testing.
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On all orders above $200
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99% Purity
All peptides are backed by COA
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Research-grade peptides, blends, and accessories — all backed by independent third-party COA testing.
Manufactured & Lyophilized in the USA
Produced under strict cGMP standards in U.S. facilities, then lyophilized for long-term stability.
Independently Lab Tested
Every batch is sent to Chromate and Freedom Diagnostics for HPLC and mass spectrometry analysis.
Sealed, Labeled & Shipped Same-Day
Each vial carries its own SKU and batch ID, and orders ship out the same business day.
From Lab to Vial, Made Right.
Quality isn't an afterthought — it's built into every step. Every GenPeptide product is manufactured, tested, and shipped under strict research-grade standards, so researchers know exactly what they're working with.
Hear it From Our Clients.
Our clients trust us to deliver exceptional peptides — and their words speak for themselves. Here's a glimpse into their experiences.
Good quality all around
Delivery was quick, payment went through smoothly and the product is really good! Ordered Reta and it's working wonders.
Smooth process
Smooth process, quick delivery and great pricing.
Fast shipping, excellent product
Fast shipping and excellent product.
Amazing customer service
They were very kind and when I asked them questions they answered very warmly.
10/10
They are such a great and reputable supplier. Their shipping is next level — 2 to 4 day shipping max, and their product is super pure.
New can be scary, but worth it!
I was a bit worried ordering from a new peptide site, especially because the prices were the best. Thankfully everything was fine — got the peptides in 2 days in beautiful packaging and labeling. Very happy and will purchase again.
Great company
Easy to navigate website with great products and great prices. Everything is third-party lab tested with COAs. Very pleased — definitely my main go-to.
GenPeptide exceeded my expectations
Easy to navigate, understand, and order. Staff is extremely responsive, knowledgeable, and professional. Great discounts on bulk orders, fast shipping, and excellent packaging. I've made multiple orders and will continue.
Great prices and super fast shipping
Prices are very good and shipping is super fast. Ordered twice and they ship out the same day you pay.
Fast arrival, great price
Product arrived really fast and intact, and the price was very reasonable.
Good quality all around
Delivery was quick, payment went through smoothly and the product is really good! Ordered Reta and it's working wonders.
Smooth process
Smooth process, quick delivery and great pricing.
Fast shipping, excellent product
Fast shipping and excellent product.
Amazing customer service
They were very kind and when I asked them questions they answered very warmly.
10/10
They are such a great and reputable supplier. Their shipping is next level — 2 to 4 day shipping max, and their product is super pure.
New can be scary, but worth it!
I was a bit worried ordering from a new peptide site, especially because the prices were the best. Thankfully everything was fine — got the peptides in 2 days in beautiful packaging and labeling.
Great company
Easy to navigate website with great products and great prices. Everything is third-party lab tested with COAs. Very pleased — definitely my main go-to.
GenPeptide exceeded my expectations
Easy to navigate, understand, and order. Staff is extremely responsive, knowledgeable, and professional. Great discounts on bulk orders, fast shipping, and excellent packaging.
Great prices and super fast shipping
Prices are very good and shipping is super fast. Ordered twice and they ship out the same day you pay.
Fast arrival, great price
Product arrived really fast and intact, and the price was very reasonable.
Orders placed before 1:00 PM EST on regular business days ship the same day. Delivery time depends on the shipping method you select. Depending on distance, we reserve the right to upgrade your shipping method free of charge.
Due to the sensitive nature of our research-use-only (RUO) products and strict quality control standards, all sales are considered final except for certain circumstances. Click here for full policy.
If your order hasn't shipped yet, contact us as soon as possible with your order number and updated address. Once an order has been packed and handed off to the carrier, we're unable to redirect it.
Once your order ships, you'll receive a confirmation email with your tracking number. You can also visit the Track My Order page anytime to check its status.
Our team is reachable through the Contact Us page or by phone at 219-319-9517. We respond to inquiries within one business day.
We currently ship within the United States only. International shipping is not available at this time. If this changes, we'll announce it on our homepage and via email to subscribers.
In most cases, yes — your full order ships in a single discreet package. Larger or multi-product orders may occasionally be split across two shipments to ensure proper handling. If that happens, you'll receive separate tracking numbers for each.
Frequently Asked Questions.
Quick answers to the questions researchers ask us most. Don't see what you're looking for? Our team is happy to help.
Contact Our TeamFeatured Products
Top Picks From Our Collection
Our most-ordered research peptides — every batch tested, every vial verified, every order shipped same-day.
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Price range: $40.00 through $200.00$40.00Select options This product has multiple variants. The options may be chosen on the product page -
Price range: $45.00 through $125.00$45.00Select options This product has multiple variants. The options may be chosen on the product page -
