Loti Labs vs Transition Biotech
Two top US peptide sources scored on the identical published formula: lab credibility, shipping, pricing, operating history, and transparency.
- Loti Labs
- 7.68/10
Loti Labs
- Transition Biotech
- 7.98/10
Transition Biotech
Affiliate links: we may earn a commission if you buy. It never changes a score or rank.
Factor by factor
- 8.2Lab Credibilityweight 55%9.2
- 8.5Shipping & Refundweight 20%6.0
- 6.4Pricingweight 15%9.5
- 7.2Operating Historyweight 5%1.8
- 3.0Transparencyweight 5%4.0
- 24Certificates confirmed at the lab10
- 2Labs named on certificates1
Show as a table
| Category | Loti Labs | Transition Biotech |
|---|---|---|
| Lab Credibility | 8.2 | 9.2 |
| Shipping & Refund | 8.5 | 6.0 |
| Pricing | 6.4 | 9.5 |
| Operating History | 7.2 | 1.8 |
| Transparency | 3.0 | 4.0 |
| Overall | 7.68 | 7.98 |
Products both carry, price for price
| Peptide | Loti Labsper unit | Transition Biotechper unit |
|---|---|---|
| BPC-157Guide → | $10.00/mg | $3.50/mg |
| TB-500Guide → | $9.00/mg | $4.50/mg |
| GHK-CuGuide → | $1.00/mg | $0.30/mg |
| CJC-1295Guide → | $20.00/mg | $4.50/mg |
| IpamorelinGuide → | $12.49/mg | $3.50/mg |
| RetatrutideGuide → | $10.00/mg | $3.50/mg |
| TirzepatideGuide → | $5.80/mg | $1.33/mg |
How they compare: the verdict
Transition Biotech takes this matchup by a razor-thin margin, 7.98 to 7.68 on the published formula. Its biggest edge is pricing, where it scores 9.5 against Loti Labs's 6.4.
It isn't a clean sweep. Loti Labs actually edges ahead on operating history (7.2 vs 1.8), so if that factor matters most to you it's worth weighing.
On lab evidence, the heaviest-weighted factor, both Loti Labs and Transition Biotech have independently verified third-party COAs, so the gap comes down to the other categories.
Across the 7 peptides both carry, Transition Biotech is cheaper per unit more often (Loti Labs wins on 0, Transition Biotech on 7). The price-for-price table below has the detail, per mg (or per IU or mL for products sold that way).
Loti Labs vs Transition Biotech: FAQ
Loti Labs or Transition Biotech: which is better?
Transition Biotech takes this matchup by a razor-thin margin, 7.98 to 7.68 on the published formula. Its biggest edge is pricing, where it scores 9.5 against Loti Labs's 6.4. It isn't a clean sweep. Loti Labs actually edges ahead on operating history (7.2 vs 1.8), so if that factor matters most to you it's worth weighing. On lab evidence, the heaviest-weighted factor, both Loti Labs and Transition Biotech have independently verified third-party COAs, so the gap comes down to the other categories. Across the 7 peptides both carry, Transition Biotech is cheaper per unit more often (Loti Labs wins on 0, Transition Biotech on 7). 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 Transition Biotech both use third-party testing?
Loti Labs: independently verified third-party COAs. Transition Biotech: 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 Transition Biotech.