TB-500
We've tested 115 samples of TB-500 sourced from 16 vendors between 16 May 2025 and 8 Jun 2026. Purity typically ranges from 85.85% to 99.91% (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 | ||||||
| 2 | 6 May 2026 | 6 May 2026 | ||||||
 | 5 | 10 Jul 2025 | 30 Apr 2026 | ||||||
| 5 | 9 Sep 2025 | 6 May 2026 | ||||||
| 5 | 21 Oct 2025 | 25 Mar 2026 | ||||||
| 12 | 9 Sep 2025 | 27 May 2026 | ||||||
 | 8 | 16 May 2025 | 30 Jan 2026 | ||||||
| 10 | 24 Jul 2025 | 29 Mar 2026 | ||||||
| 8 | 21 Oct 2025 | 26 Feb 2026 | ||||||
 | 18 | 29 Jun 2025 | 27 May 2026 | ||||||
| 7 | 30 Dec 2025 | 6 May 2026 | ||||||
| 5 | 9 Oct 2025 | 13 May 2026 | ||||||
| 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 | Batch ID | Container | Tested At | Sent By |
| 27 May 2026 | LiliPeptide | View | 5mg | 5.78mg | +15.6% | 92.30% | March 11, 2026 | No label / Silver crimp / White cap | Lab E | Public | ||
| 27 May 2026 | LiliPeptide | View | Fragment 17-23 | 5mg | 5.31mg | +6.2% | 89.70% | March 11 2026 | White label / Silver crimp / White cap | Lab E | Public | |
| 27 May 2026 | Qing Li Peptide | View | Fragment 17-23 | 10mg | 12.1mg | +21.0% | 95.70% | March 6, 2026 | No label / Green crimp / Clear cap | Lab E | Public | |
| 13 May 2026 | ZLZ Peptide | View | Thymosin Beta-4 | 2mg | 2.06mg | +3.0% | 99.30% | (no batch ID) | White Label / Silver Crimp / Blue Cap | Lab E | Public | |
| 6 May 2026 | TSC Top Supplements China | View | 10mg | 8.75mg | -12.5% | 99.40% | TB10 | No Label / Silver Crimp / White Cap | Lab E | Public | ||
| 6 May 2026 | NuLife Peptides | View | Thymosin Beta-4 | 10mg | 8.73mg | -12.7% | 99.90% | TBF1012062025-j | White Label / Blue Crimp / Clear Purple Cap | Lab E | Vendor | |
| 6 May 2026 | Tianjin Ruiwang New Material Technology Co | View | 5mg | 4.02mg | -19.6% | 95.40% | BT5 | White Label / Silver Crimp / Blue Cap | Lab E | Public | ||
Launch with Finnrick
Some of the samples listed on this page were submitted by their vendor, as part of the Launch with Finnrick vendor support program.
The program is designed to help vendors get listed on the Finnrick web site while protecting the integrity of our rating system.
The vendor submitted four samples per product, two of which were tested by Finnrick for identity, purity and quantity according to our usual process. The vials were anonymized before being sent to the testing lab.