Loti Labs vs Peptix USA
Two top US peptide sources scored on the identical published formula: lab credibility, shipping, pricing, operating history, and transparency.
- Loti Labs
- 7.79/10
Loti Labs
- Peptix USA
- 8.11/10
Peptix USA
Affiliate links: we may earn a commission if you buy. It never changes a score or rank.
Factor by factor
- 8.4Lab Credibilityweight 55%8.6
- 8.5Shipping & Refundweight 20%9.0
- 6.4Pricingweight 15%8.9
- 7.2Operating Historyweight 5%1.3
- 3.0Transparencyweight 5%3.5
- 24Certificates confirmed at the lab5
- 2Labs named on certificates2
Show as a table
| Category | Loti Labs | Peptix USA |
|---|---|---|
| Lab Credibility | 8.4 | 8.6 |
| Shipping & Refund | 8.5 | 9.0 |
| Pricing | 6.4 | 8.9 |
| Operating History | 7.2 | 1.3 |
| Transparency | 3.0 | 3.5 |
| Overall | 7.79 | 8.11 |
Products both carry, price for price
| Peptide | Loti Labsper unit | Peptix USAper unit |
|---|---|---|
| BPC-157Guide → | $10.00/mg | $4.00/mg |
| Tesamorelin | $8.00/mg | $6.20/mg |
| RetatrutideGuide → | $10.00/mg | $5.90/mg |
| TirzepatideGuide → | $5.80/mg | $2.90/mg |
How they compare: the verdict
Peptix USA takes this matchup by a razor-thin margin, 8.11 to 7.79 on the published formula. Its biggest edge is pricing, where it scores 8.9 against Loti Labs's 6.4.
It isn't a clean sweep. Loti Labs actually edges ahead on operating history (7.2 vs 1.3), so if that factor matters most to you it's worth weighing.
On lab evidence, the heaviest-weighted factor, both Loti Labs and Peptix USA have independently verified third-party COAs, so the gap comes down to the other categories.
Across the 4 peptides both carry, Peptix USA is cheaper per unit more often (Loti Labs wins on 0, Peptix USA on 4). The price-for-price table below has the detail, per mg (or per IU or mL for products sold that way).
Affiliate links: we may earn a commission if you buy. It never changes a score or rank.
Loti Labs vs Peptix USA: FAQ
Loti Labs or Peptix USA: which is better?
Peptix USA takes this matchup by a razor-thin margin, 8.11 to 7.79 on the published formula. Its biggest edge is pricing, where it scores 8.9 against Loti Labs's 6.4. It isn't a clean sweep. Loti Labs actually edges ahead on operating history (7.2 vs 1.3), so if that factor matters most to you it's worth weighing. On lab evidence, the heaviest-weighted factor, both Loti Labs and Peptix USA have independently verified third-party COAs, so the gap comes down to the other categories. Across the 4 peptides both carry, Peptix USA is cheaper per unit more often (Loti Labs wins on 0, Peptix USA on 4). The price-for-price table below has the detail, per mg (or per IU or mL for products sold that way).
Do Loti Labs and Peptix USA both use third-party testing?
Loti Labs: independently verified third-party COAs. Peptix USA: independently verified third-party COAs.
How was this comparison scored?
Both vendors are scored on the identical published formula: lab credibility 55%, shipping 20%, pricing 15%, operating history 5%, transparency 5%. When third-party testing cannot be independently verified, a testing gate holds the score under a cap that starts at 6.0 and rises by at most 2.5 points for operating history, shipping and reviews. Neither vendor can pay to change a score.
More comparisons
Other head-to-heads featuring Loti Labs or Peptix USA.