TB-500
We've tested 97 samples of TB-500 sourced from 13 vendors between 16 May 2025 and 6 May 2026. Purity typically ranges from 85.82% to 99.90% (5th-95th percentile), and quantity typically diverges by up to +/-100% vs advertised value (95th percentile).
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Vendors
| Tests | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Vendor | Rating | Count | Avg | Min | Max | Oldest | Most Recent | ||
 | 11 | 30 Jan 2026 | 4 Mar 2026 | ||||||
 | 2 | 9 Jan 2026 | 7 Mar 2026 | ||||||
 | 5 | 10 Jul 2025 | 30 Apr 2026 | ||||||
| 10 | 9 Sep 2025 | 18 Mar 2026 | ||||||
 | 8 | 16 May 2025 | 30 Jan 2026 | ||||||
| 10 | 24 Jul 2025 | 29 Mar 2026 | ||||||
 | 16 | 29 Jun 2025 | 18 Mar 2026 | ||||||
| 8 | 21 Oct 2025 | 26 Feb 2026 | ||||||
| 6 | 30 Dec 2025 | 28 Apr 2026 | ||||||
| 4 | 9 Oct 2025 | 29 Dec 2025 | ||||||
| 5 | 23 Oct 2025 | 7 Mar 2026 | ||||||
| 8 | 4 Aug 2025 | 25 Mar 2026 | ||||||
| 3 | 24 Jul 2025 | 9 Sep 2025 | ||||||
Most recent TB-500 tests
Samples are tested in commercial labs
| Quantity | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Vendor | Certificate | Variant | Test Score | Label | Tested | Difference | Purity | Endotoxins | Batch ID | Container | Tested At | Sent By |
| 30 Apr 2026 | Nexaph | View | 10mg | 8.6mg | -14.0% | 99.50% | n/a | TBF100408082026-04 | No Label / Green Crimp / Black Cap | Lab G | Public | ||
| 28 Apr 2026 | Tianjin Ruiwang New Material Technology Co | View | 5mg | ⚠️ Sample does not contain TB-500 | n/a | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab E | Public | ||||
| 27 Apr 2026 | Nexaph | View | Endotoxins | 10mg | n/a | n/a | n/a | low | TBF100408082026-04 | No Label / Green Crimp / Black Cap | Lab G | Public | |
| 21 Apr 2026 | Tianjin Ruiwang New Material Technology Co | View | Thymosin Beta-4 | 10mg | 10.6mg | +6.0% | 99.70% | n/a | BT10 | White Label / Silver Crimp / Red Cap | Lab G | Public | |
| 29 Mar 2026 | Reta-Peptide | View | 5mg | ⚠️ Sample does not contain TB-500 | n/a | 01/02/2028 | No Label / Silver Crimp / Blue Cap | Lab G | Public | ||||
| 25 Mar 2026⚠️ | Wuhan Wansheng Biotechnology | View | 10mg | 13.4mg | +34.0% | 99.60% | n/a | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab G | Public | ||
| 18 Mar 2026 | Reta-Peptide | View | 5mg | 4.85mg | -3.0% | 97.80% | n/a | jan 4, 2026 | No Label / Silver Crimp / Gray Cap | Lab E | Public | ||