Masters Peptides has a meaningful Finnrick record but thin disclosure and above-median prices. Finnrick lists 24 independent tests for it, the latest on September 30, 2026. But the site doesn't publish an address, company name or testing lab, and the only COA we found was a single image. Most prices we checked on October 19, 2026 were above the median across the vendors in our price index.
Notice: Masters Peptides' products are sold for in-vitro laboratory research only. They are not FDA-approved and not for human or animal use. This review covers supplier transparency and prices only. We didn't buy or test any products. Some vendors pay us a commission when you buy through our links. That never changes a score or a price ranking.
Masters Peptides at a glance
- Website: mpeptides.com, live when checked on October 19, 2026.
- Based in: not published on its site when we checked.
- Company: no legal entity or founding year published.
- Testing labs/COAs: no lab named; one COA image found. Mentions endotoxin or sterility testing.
- Independent tests (Finnrick): 24 tests listed on Finnrick, most recent September 30, 2026.
- Payment: accepted methods were not published on its site when we checked.
- Gate: none recorded; products and prices were public.
- Catalog: 15 peptide products listed.
- Checked: October 19, 2026.
Prices we checked
| Peptide | Size | Price | Per mg | vs index median |
|---|---|---|---|---|
| BPC-157 | 20mg | $180 | $9.00 | 50% above |
| BPC-157 | 10mg | $101 | $10.10 | 68% above |
| TB-500 (Thymosin Beta 4) | 10mg | $141 | $14.10 | 86% above |
| GHK-Cu | 100mg | $130 | $1.30 | 86% above |
| MOTS-c | 40mg | $200 | $5.00 | 11% above |
| Wolverine Blend (BPC-157/TB-500) | 20mg | $180 | $9.00 | 64% above |
| KLOW Blend | 80mg | $200 | $2.50 | 55% above |
| Epitalon | 50mg | $150 | $3.00 | 20% below |
| 5-Amino-1MQ | 50mg | $220 | $4.40 | at median |
| CJC-1295 (no DAC) | 10mg | $80 | $8.00 | 3% above |
| PT-141 | 10mg | $120 | $12.00 | 167% above |
Prices as listed on October 19, 2026. MOTS-c 10mg was also listed at $200, the same price as the 40mg size. We didn't see retatrutide, tirzepatide or semaglutide in the prices we read. Compare BPC-157 prices, TB-500 prices, GHK-Cu prices, MOTS-c prices and our full price index.
Testing and COAs
The site mentions endotoxin or sterility testing, but the only certificate we found was one image for a CJC-1295 (no DAC)/Ipamorelin blend. We didn't find a COA library, a named lab or lot numbers matched to reports.
The stronger evidence is outside the site: Finnrick lists 24 independent tests, the latest dated September 30, 2026. Check the compound you need there.
What we like
- 24 independent tests on Finnrick, recent as of September 30, 2026.
- Endotoxin or sterility testing mentioned.
- A quality guarantee: replacement or refund if products don't meet stated specifications.
- Same-day shipping on orders before 12 PM EST, with email tracking.
- Epitalon 50mg priced below the index median.
What to watch
- No address, company name or founding year published.
- No testing lab named and no COA library found.
- Most prices above the index median; PT-141 was 167% above.
- MOTS-c 10mg and 40mg listed at the same $200 price.
- The Wolverine blend is labeled "Globally Sourced."
How it compares
Masters Peptides has more independent testing than many vendors, but less on-site disclosure. Compare all vendors we track, peptide deals this week and our ranked list.
Bottom line
Masters Peptides' Finnrick record is its main strength. Thin on-site documentation and above-median prices hold it back, so check Finnrick and compare prices before ordering.
Last checked October 19, 2026.
