TB-500 Certificate of Analysis Results
What the TB-500 record shows
Evidence through 2026-08-31TitrateLab tracks 1,913 published TB-500 certificate-of-analysis records through 2026-08-31. Across 1,905 records with a usable peptide-purity result, the median reported purity is 99.3%. Across 1,597 records with measured-versus-label dose data, 47% are within 10% of the labeled quantity. This is a public convenience sample, not a randomized market survey; one result describes one submitted sample and does not verify other batches.
Limits and missing evidence
- The testing laboratory is unattributed on 10 records.
- Coverage depends on reports that were published and available to ingest.
TB-500 lab-testing metrics
COAs per testing lab
Top 12 of 13 labs by certificate count.
+ 1 more lab with fewer certificates.
Tested-purity distribution
Bins below 90% tested purity (2% of certs).
| Purity range | Certificates |
|---|---|
| 0–50% | 21 |
| 50–70% | 1 |
| 70–80% | 3 |
| 80–85% | 2 |
| 85–90% | 8 |
| 90–91% | 1 |
| 91–92% | 3 |
| 92–93% | 2 |
| 93–94% | 6 |
| 94–95% | 5 |
| 95–96% | 12 |
| 96–97% | 18 |
| 97–98% | 42 |
| 98–99% | 142 |
| 99–100% | 1639 |
COAs over time
TB-500 certificates published per month.
| Month | Certificates |
|---|---|
| 2021-02 | 1 |
| 2022-07 | 1 |
| 2022-11 | 1 |
| 2023-04 | 1 |
| 2023-05 | 1 |
| 2023-06 | 2 |
| 2023-09 | 5 |
| 2023-11 | 2 |
| 2023-12 | 2 |
| 2024-01 | 5 |
| 2024-02 | 5 |
| 2024-03 | 5 |
| 2024-04 | 5 |
| 2024-05 | 7 |
| 2024-06 | 4 |
| 2024-07 | 9 |
| 2024-08 | 8 |
| 2024-09 | 6 |
| 2024-10 | 6 |
| 2024-11 | 5 |
| 2024-12 | 8 |
| 2025-01 | 11 |
| 2025-02 | 11 |
| 2025-03 | 21 |
| 2025-04 | 18 |
| 2025-05 | 24 |
| 2025-06 | 29 |
| 2025-07 | 43 |
| 2025-08 | 38 |
| 2025-09 | 56 |
| 2025-10 | 85 |
| 2025-11 | 78 |
| 2025-12 | 105 |
| 2026-01 | 117 |
| 2026-02 | 173 |
| 2026-03 | 144 |
| 2026-04 | 142 |
| 2026-05 | 168 |
| 2026-06 | 186 |
| 2026-07 | 170 |
| 2026-08 | 205 |
Most-tested vendors
Top 10 of 15 vendors by TB-500 certificate count.
See who tests most — unlock the vendor names with Pro.
+ 5 more vendors with fewer certificates.
Published TB-500 certificates of analysis
1913 records. Zero guesswork.
Unlock the actual vendor, purity, dose accuracy, lab, batch and saved certificate for every TB-500 result.
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