Pt 141 Certificate of Analysis Results
What the Pt 141 record shows
Evidence through 2026-09-01TitrateLab tracks 1,007 published Pt 141 certificate-of-analysis records through 2026-09-01. Across 1,006 records with a usable peptide-purity result, the median reported purity is 99.9%. Across 829 records with measured-versus-label dose data, 57% 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 11 records.
- Coverage depends on reports that were published and available to ingest.
Pt 141 lab-testing metrics
COAs per testing lab
Top 12 of 14 labs by certificate count.
+ 2 more labs with fewer certificates.
Tested-purity distribution
Bins below 90% tested purity (0% of certs).
| Purity range | Certificates |
|---|---|
| 0–50% | 2 |
| 50–70% | 1 |
| 70–80% | 0 |
| 80–85% | 0 |
| 85–90% | 1 |
| 90–91% | 1 |
| 91–92% | 0 |
| 92–93% | 1 |
| 93–94% | 0 |
| 94–95% | 1 |
| 95–96% | 1 |
| 96–97% | 5 |
| 97–98% | 5 |
| 98–99% | 14 |
| 99–100% | 974 |
COAs over time
Pt 141 certificates published per month.
| Month | Certificates |
|---|---|
| 2022-11 | 1 |
| 2023-11 | 1 |
| 2024-01 | 1 |
| 2024-05 | 2 |
| 2024-06 | 5 |
| 2024-07 | 7 |
| 2024-08 | 2 |
| 2024-09 | 4 |
| 2024-11 | 2 |
| 2024-12 | 2 |
| 2025-01 | 11 |
| 2025-02 | 3 |
| 2025-03 | 19 |
| 2025-04 | 9 |
| 2025-05 | 32 |
| 2025-06 | 14 |
| 2025-07 | 18 |
| 2025-08 | 32 |
| 2025-09 | 19 |
| 2025-10 | 53 |
| 2025-11 | 49 |
| 2025-12 | 47 |
| 2026-01 | 50 |
| 2026-02 | 65 |
| 2026-03 | 56 |
| 2026-04 | 60 |
| 2026-05 | 86 |
| 2026-06 | 89 |
| 2026-07 | 138 |
| 2026-08 | 129 |
| 2026-09 | 1 |
Most-tested vendors
Top 10 of 15 vendors by Pt 141 certificate count.
See who tests most — unlock the vendor names with Pro.
+ 5 more vendors with fewer certificates.
Published Pt 141 certificates of analysis
1007 records. Zero guesswork.
Unlock the actual vendor, purity, dose accuracy, lab, batch and saved certificate for every Pt 141 result.
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