peptide
TB-500
Repairalso known as Thymosin Beta-4 fragment, TB4
A synthetic version of an active region of thymosin β-4, a naturally occurring intracellular peptide.
Researched in animal models for cardiac, corneal, and soft-tissue repair. Banned by WADA for performance use. Published human clinical data remains limited.
13 vendors with finnrick test grades. Higher grade = higher confirmed purity. Live pricing coverage is still being expanded for this peptide.
| # | Vendor | Grade | Score | Tests | Reputation |
|---|---|---|---|---|---|
| 1 | Great | A | 9.2 | 2 | 78 |
| 2 | Great | A | 8.1 | 11 | 82 |
| 3 | Good | B | 6.2 | 5 | 70 |
| 4 | Poor | D | 6.1 | 10 | 74 |
| 5 | Fraud | F | 5.0 | 3 | 70 |
| 6 | Fraud | F | 4.9 | 8 | 68 |
| 7 | Reta-Peptideflag Bad | E | 6.5 | 10 | 74 |
| 8 | Bad | E | 5.8 | 5 | 65 |
| 9 | Bad | E | 5.1 | 16 | 71 |
| 10 | Bad | E | 5.1 | 6 | 70 |
| 11 | Bad | E | 5.0 | 8 | 64 |
| 12 | Bad | E | 4.9 | 4 | 70 |
| 13 | Bad | E | 4.9 | 8 | 69 |
Available pricing — limited coverage
$130 / 10mg
$13.00/mg
Live pricing coverage is still being expanded for TB-500. This is the only vendor with public pricing we can currently verify — shown as available pricing, not a ranked comparison.
Grades sourced from finnrick.com. Grade A = highest confidence in purity based on independent lab testing. Score is averaged across 96 individual tests.