Compare the Top 5
Every peptide brand side by side — ratings, pricing, and key features at a glance.
Side-by-Side Comparison
How the top 5 research peptide brands stack up on the metrics that matter.
Swiss Chems#1 | AminoClub#2 | HLX Labs#3 | Purity Peptides#4 | Ascension Peptides#5 | |
|---|---|---|---|---|---|
| Our Rating | 4.9 | 4.8 | 4.7 | 4.6 | 4.5 |
| Price | $19.95 – $249.99 | See pricing | $7.99 – $169.99 | $29.99 – $199.99 | Blends from $120 |
| Third-Party Tested | Yes (HPLC/MS, COA) | Yes | Every batch (COA) | Yes (COA) | Yes (multi-stage) |
| Verified Purity | 99%+ | Research-grade | Lab-verified | 99%+ | 99%+ |
| Shipping | Worldwide | Fast US dispatch | 24–48h, free $250+ | North American | US only, fast |
| Bulk Discounts | Volume pricing | Volume pricing | Wholesale + HLXLABS15 | On request | Wholesale tiers |
| Returns | Money-back guarantee | Per policy | Per policy | Per policy | Per policy |
| Visit Swiss Chems | Visit AminoClub | Visit HLX Labs | Visit Purity Peptides | Visit Ascension |
How We Rank
Every peptide brand is scored against the same criteria, so our rankings stay consistent and fair.
Third-Party Lab Testing
Every brand is scored on whether it publishes independent HPLC/MS purity reports for each batch — non-negotiable for research use.
Verified Purity
We weight suppliers that consistently certify ≥99% purity and make their certificates of analysis publicly accessible.
Shipping & Cold Chain
Reconstitution-sensitive compounds need fast, properly packed shipping. We track delivery speed and packaging quality.
Pricing & Value
Cost per mg, bulk discounts, and loyalty pricing — measured against the purity you actually receive.
Swiss Chems
One of the longest-running and most transparent research vendors — third-party HPLC/MS testing with published Certificates of Analysis across a huge catalog. Our top pick for 2026.
Visit Swiss Chems