99%+ Verified Purity
Every batch HPLC and MS confirmed.
Same-Day Dispatch
Orders placed by 1pm EST ship today.
COA with Every Batch
Certificates of Analysis available on request.
Just Peptides Standard
Premium research products with clear labeling and compliance.
Featured Peptides
Relied on by researchers for consistent purity and fully documented batch verification. Explore our most in-demand research selections below.
Relied on by researchers for consistent purity and fully documented batch verification.
-
Glutathione 750mg
$54.99 -
CJC No DAC 5MG
$54.99 -
IGF LR3 1MG
$119.99 -
MT-2 10MG
$29.99 -
Ipamorelin 5MG
$39.99 -
KPV 10mg
$54.99 -
Semaglutide 5MG
$74.99 -
Selank 10MG
$44.99 -
Retatrutide
Price range: $109.99 through $329.99This product has multiple variants. The options may be chosen on the product page -
Tirzepatide
Price range: $79.99 through $239.99This product has multiple variants. The options may be chosen on the product page -
Tesamorelin 10MG
$89.99 -
TB-500
Price range: $36.99 through $73.99This product has multiple variants. The options may be chosen on the product page
Research Use Only
Every serious peptide supplier clearly communicates the Research Use Only (RUO) designation to ensure responsible handling and compliance within the scientific community.
All products offered by Just Peptides are intended strictly for laboratory research purposes. These materials are not for human consumption and are not intended for diagnostic, therapeutic, or medical use.
By purchasing from our website, customers confirm that they are qualified researchers, laboratories, or research institutions and fully understand the research-use-only designation associated with these products.
Verified Research Backed Quality
Choose independently tested peptide research materials with documented purity and batch verification. Designed exclusively for laboratory investigation with secure fulfillment.
Research use only. Not approved for medical, therapeutic, or veterinary applications.
Engineered for Precision Validated Through Testing
At Just Peptides, we support researchers with uncompromising quality, transparent reporting, and consistent batch performance you can rely on.
Independently Tested Quality
Each product undergoes third-party laboratory validation to confirm purity and consistency.
Complete COA Library
Comprehensive documentation ensures every batch is traceable, validated, and fully accessible for review.
Research Grade Quality
Each formulation is manufactured in USA to the highest research standards, delivering exceptional purity, stability, and repeatable results in controlled research environments.
Frequently Asked Questions
What are research peptides?
Research peptides are short chains of amino acids used for laboratory, in vitro, or analytical science work. They are not approved for human or veterinary use, and are intended solely for experimental or research purposes.
How should the peptides be stored?
Peptides are best kept in cool, dry conditions. Lyophilized (powder) form should be stored at or below [your recommended temp, e.g. 4°C] and protected from moisture. After reconstitution, use according to lab‑specific guidance and store as indicated on the product page.
How long does shipping take?
Orders placed by 3 PM EST ship the same or next business day. Delivery times depend on the destination; most U.S. orders arrive in 3 business days with standard services.
What is your refund / return policy?
Because these are specialized research compounds, we do not accept returns once product has left the facility (unless there is an error on our part or the product fails QC). If you believe there’s a quality issue, contact us email with your order number and batch/lot info, and we’ll review the COA and options.
Are you responsible for how your peptides are used?
No. All compounds sold by Just Peptides are for laboratory research use only and are not intended for human or veterinary consumption. We do not condone, support, or accept any misuse of our products.
By purchasing from our site, you agree that you are solely responsible for how these compounds are handled, stored, and used. Just Peptides assumes no liability for misuse or non-research applications.