Your Trusted Guide to Research Peptides
Independent vendor reviews, COA verification guides, and research-backed peptide information – all from a team that doesn’t take vendor money.
Why Trust PeptidePick?
Independent Testing Focus
We verify vendor COAs and review third-party lab results. No shortcuts, no guesswork.
No Sponsored Placements
We don’t accept free products or sponsored content. While we earn affiliate commissions, they never influence our ratings.
Data-Driven Ratings
Every vendor score comes from measurable criteria: purity testing, pricing, shipping speed, and customer support.
Research-Backed Content
Our peptide guides cite published studies and clinical data. We separate hype from real evidence.
Our Top Vendor Picks for 2026
After reviewing dozens of peptide suppliers, these three consistently deliver on purity, transparency, and customer experience.
Core Peptides
#1 Best Overall
Consistently high purity results (99%+), fast US-based shipping, and publicly available COAs for every batch. The standard others should meet.
- Third-party tested, COAs on site
- Free shipping over $150
- Wide peptide selection
Limitless Biotech
#2 Best Quality
Known for exceptional quality control and a transparent approach to lab testing. Great customer support and reliable stock availability.
- HPLC and mass spec testing
- Responsive customer service
- Competitive pricing
SwissChems
#3 Best Selection
One of the most established names in research peptides. Broad product catalog, crypto payment options, and solid track record over years of operation.
- Established reputation since 2014
- Accepts crypto payments
- Large product selection
Popular Peptide Guides
In-depth guides on the most researched peptides – what the science says, how they work, and what to look for when buying.
BPC-157
A body protection compound studied for its role in tissue repair, gut healing, and injury recovery. One of the most popular research peptides available.
TB-500
A synthetic version of thymosin beta-4, researched for its effects on wound healing, inflammation, and muscle recovery. Often paired with BPC-157.
GHK-Cu
A copper peptide with strong research behind its anti-aging, skin repair, and hair growth properties. Available in topical and injectable forms.
Semaglutide
The GLP-1 receptor agonist behind Ozempic and Wegovy. Heavily studied for weight management and metabolic health, with growing research interest.
Latest Guides & Articles
Frequently Asked Questions
What are research peptides?
Research peptides are short chains of amino acids sold for laboratory and scientific research purposes. They include compounds like BPC-157, TB-500, and GHK-Cu that are being studied for various biological effects. These products are not approved for human consumption and are sold strictly for research use.
How do I know if a peptide vendor is legitimate?
Look for vendors that provide third-party Certificates of Analysis (COAs) for every batch, use HPLC and mass spectrometry testing, have transparent business practices, and maintain consistent customer reviews. Our vendor reviews evaluate all of these factors in detail.
What is a Certificate of Analysis (COA)?
A COA is a document from an independent laboratory that verifies the identity, purity, and composition of a peptide product. It typically includes HPLC purity results, mass spectrometry data confirming molecular weight, and information about potential contaminants. A valid COA should come from a third-party lab – not the vendor’s own in-house testing.
What’s the difference between pharmaceutical-grade and research-grade peptides?
Pharmaceutical-grade peptides are manufactured under GMP (Good Manufacturing Practice) conditions and meet strict FDA standards for use in approved medications. Research-grade peptides are produced for laboratory use and, while they can be very high purity (98-99%+), they are not manufactured under the same regulatory oversight.
How should peptides be stored?
Unreconstituted (powdered) peptides should be stored in a freezer at -20C or colder, away from light and moisture. Once reconstituted with bacteriostatic water, peptides should be refrigerated at 2-8C and typically used within 30 days. Always check the specific storage guidelines for each peptide, as some are more sensitive to degradation than others.
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