99%+ purity · USA shipping

GLP-1

Research-grade lyophilized peptides. Third-party tested, COA available on request, shipped within 24 hours from our USA facility.

GLP-1

3rd-party tested · COA on request 24 h dispatch from USA Free shipping on orders over $150 Crypto & card checkout

Categories

All Products GLP-1 / Incretin Class Analogs 3 Peptide Blends & Multi-Component Formulations 2 Copper-Peptide Complexes 1 Cytoprotective & Healing Peptides 3 IGF & Insulin-Class Peptides 1 Growth Hormone Secretagogues (GHS) 3 Neuropeptide & CNS-Active Compounds 4 Metabolic & Mitochondrial Compounds 3 Melanocortin & Reproductive Peptides 3 Dermatological & Cosmetic Research Reagents 1 Laboratory Solutions & Consumables 2

Working out dilutions before you order? Use the free peptide reconstitution calculator to convert any vial mass and diluent volume into concentration, draw volume and U-100 syringe graduations.

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In stock 24 h ship
Sale!
Retatrutide
Price range: $79.99 through $219.99
Available in 10 mg / 20 mg / 30 mg / 40 mg
Select options This product has multiple variants. The options may be chosen on the product page
In stock 24 h ship
Sale!
Tirzepatide
Price range: $54.99 through $259.99
Available in 10 mg / 20 mg / 30 mg / 40 mg +1 more
Select options This product has multiple variants. The options may be chosen on the product page
In stock 24 h ship
Sale!
Semaglutide
Price range: $39.99 through $89.99
Available in 10 mg / 20 mg / 30 mg
Select options This product has multiple variants. The options may be chosen on the product page

How to Order

Ordering research materials from Greatest Peptides is straightforward:

1Browse the catalog and locate the research peptides you need.

2Select the size and quantity, then click Add to Cart.

3Review your cart and proceed to secure checkout when ready.

4Enter shipping details, choose a payment method, and place the order.

5You receive an order confirmation email once the order is placed.

Questions during checkout? Our support team is ready to help.

Trusted by Research Teams

Documentation-first sourcing built for RUO laboratory work — verifiable, traceable, and analyzed by an independent lab.

Third-Party Tested

Independent HPLC & LC-MS on every lot

Batch-Specific COAs

A certificate you can match to your vial

Lot Traceability

Every vial maps to a published document

US-Based Fulfillment

Same-day dispatch before 3PM EST

GLP-1

Retatrutide

Tirzepatide

Semaglutide

How to Order

Trusted by Research Teams

Third-Party Tested

Batch-Specific COAs

Lot Traceability

US-Based Fulfillment