Loti Labs vs Southern Aminos
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
- Southern Aminos
- 8.09/10
Southern Aminos
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Factor by factor
- 8.2Lab Credibilityweight 55%9.0
- 8.5Shipping & Refundweight 20%7.5
- 6.4Pricingweight 15%8.5
- 7.2Operating Historyweight 5%2.3
- 3.0Transparencyweight 5%5.0
- 24Certificates confirmed at the lab28
- 2Labs named on certificates2
Show as a table
| Category | Loti Labs | Southern Aminos |
|---|---|---|
| Lab Credibility | 8.2 | 9.0 |
| Shipping & Refund | 8.5 | 7.5 |
| Pricing | 6.4 | 8.5 |
| Operating History | 7.2 | 2.3 |
| Transparency | 3.0 | 5.0 |
| Overall | 7.68 | 8.09 |
Products both carry, price for price
| Peptide | Loti Labsper unit | Southern Aminosper unit |
|---|---|---|
| BPC-157Guide → | $10.00/mg | $3.84/mg |
| TB-500Guide → | $9.00/mg | $4.80/mg |
| GHK-CuGuide → | $1.00/mg | $0.40/mg |
| CJC-1295Guide → | $20.00/mg | $6.40/mg |
| IpamorelinGuide → | $12.49/mg | $4.80/mg |
| Semax | $8.00/mg | $3.52/mg |
| Selank | $5.00/mg | $3.52/mg |
| Melanotan-2 | $4.00/mg | $4.16/mg |
| Tesamorelin | $8.00/mg | $3.96/mg |
| RetatrutideGuide → | $10.00/mg | $1.84/mg |
| TirzepatideGuide → | $5.80/mg | $2.07/mg |
| PT-141 | $4.00/mg | $4.40/mg |
| AOD-9604 | $10.00/mg | $8.80/mg |
| 5-Amino-1MQ | $5.00/mg | $1.60/mg |
| IGF-1 LR3 | $79.99/mg | $60.00/mg |
| Cagrilintide | $18.00/mg | $11.92/mg |
How they compare: the verdict
Southern Aminos takes this matchup by a clear margin, 8.09 to 7.68 on the published formula. Its biggest edge is pricing, where it scores 8.5 against Loti Labs's 6.4.
It isn't a clean sweep. Loti Labs actually edges ahead on operating history (7.2 vs 2.3), so if that factor matters most to you it's worth weighing.
On lab evidence, the heaviest-weighted factor, both Loti Labs and Southern Aminos have independently verified third-party COAs, so the gap comes down to the other categories.
Across the 16 peptides both carry, Southern Aminos is cheaper per unit more often (Loti Labs wins on 2, Southern Aminos on 14). The price-for-price table below has the detail, per mg (or per IU or mL for products sold that way).
Loti Labs vs Southern Aminos: FAQ
Loti Labs or Southern Aminos: which is better?
Southern Aminos takes this matchup by a clear margin, 8.09 to 7.68 on the published formula. Its biggest edge is pricing, where it scores 8.5 against Loti Labs's 6.4. It isn't a clean sweep. Loti Labs actually edges ahead on operating history (7.2 vs 2.3), so if that factor matters most to you it's worth weighing. On lab evidence, the heaviest-weighted factor, both Loti Labs and Southern Aminos have independently verified third-party COAs, so the gap comes down to the other categories. Across the 16 peptides both carry, Southern Aminos is cheaper per unit more often (Loti Labs wins on 2, Southern Aminos on 14). 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 Southern Aminos both use third-party testing?
Loti Labs: independently verified third-party COAs. Southern Aminos: 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.
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