Ranked by Finnrick trust score, purity testing, and price.
Omegamino is our #1 pick for TB-500, with a Finnrick trust score of 7.7/10. Across 62 tracked vendors, prices range from $22.95 to $426.30, verified by Peptide Compare on 9 Oct 2026. Prices are scraped from vendor sites; trust scores come from Finnrick blind tests.
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| Rank | Vendor | Trust score | Per mg |
|---|---|---|---|
| #1 | Omegamino | 7.7/10 | $5.10 |
| #2 | Amino Sequence | 7.8/10 | $5.50 |
| #3 | Eros Peptides | 6.9/10 | $4.50 |
| #4 | Felix Chem | 7.9/10 | $7.00 |
| #5 | Paramount Peptides | 6.7/10 | $6.25 |
| #6 | Bio Pepz | 6.5/10 | $5.88 |
| #7 | Polaris Peptides | 7.3/10 | $7.00 |
| #8 | Lumi Peptides | 7.8/10 | $13.50 |
| #9 | Oasis Labs | 5.7/10 | $5.70 |
| #10 | Nextech Labs | 7.0/10 | $7.50 |
Our composite score weighs Finnrick blind-testing trust scores (62%), price competitiveness (25%), and stock availability (13%). Vendors without Finnrick data are sorted by price below scored vendors. We never accept payment for rankings. Learn more.