Pt 141 lab reports
What the Pt 141 record shows
Evidence through 2026-10-15TitrateLab tracks 1,259 published Pt 141 certificate-of-analysis source records through 2026-10-15, each with a recorded purity or measured-versus-label amount result. Across 1,255 records with a numeric peptide-purity result, including zero, the median reported purity is 99.9%. Across 1,058 records with measured-versus-label dose data, 55% 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.
Published records with a non-null purity or measured-versus-label amount result. Matching uses a normalized compound slug. No deduplication in this archive summary; relays and corrected records can remain separate. Records with neither measurement are excluded here, but can appear in the research overview's exact-token raw-record total. These are not unique certificates or batches. TitrateLab indexes reports from third-party laboratories.
Aggregate calculated: 2026-10-18T09:32:52.422802+00:00. Calculation time is not a test date.
Limits and missing evidence
- The testing laboratory is unattributed on 16 records.
- Coverage depends on reports that were published and available to ingest.
Pt 141 lab-testing metrics
COAs per testing lab
Top 12 of 16 labs by certificate count.
+ 4 more labs with fewer certificates.
Tested-purity distribution
Bins below 90% tested purity (0% of numeric purity records).
| Purity range | Certificates |
|---|---|
| 0–50% | 4 |
| 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% | 6 |
| 97–98% | 5 |
| 98–99% | 14 |
| 99–100% | 1220 |
COAs over time
Pt 141 source records by test month (discovery month when test date is absent).
| 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 | 19 |
| 2025-08 | 32 |
| 2025-09 | 21 |
| 2025-10 | 56 |
| 2025-11 | 51 |
| 2025-12 | 52 |
| 2026-01 | 57 |
| 2026-02 | 66 |
| 2026-03 | 60 |
| 2026-04 | 62 |
| 2026-05 | 87 |
| 2026-06 | 91 |
| 2026-07 | 141 |
| 2026-08 | 147 |
| 2026-09 | 154 |
| 2026-10 | 48 |
Most-tested vendors
Top 10 of 15 vendors by Pt 141 certificate count.
Lab evidence
Free previewExplore this vendor’s lab reports
Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Pro shows the vendor’s name, its original lab reports and batch details.
- Vendor names on every ranking and chart
- Original COAs with batch details
- Buyer reviews for each vendor
- Price and stock alerts for your watchlist
- Ask Titer, the AI research assistant
Monthly or yearly plans. Cancel either anytime. Compare plans
Lab evidence
Free previewExplore this vendor’s lab reports
Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Pro shows the vendor’s name, its original lab reports and batch details.
- Vendor names on every ranking and chart
- Original COAs with batch details
- Buyer reviews for each vendor
- Price and stock alerts for your watchlist
- Ask Titer, the AI research assistant
Monthly or yearly plans. Cancel either anytime. Compare plans
Lab evidence
Free previewExplore this vendor’s lab reports
Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Pro shows the vendor’s name, its original lab reports and batch details.
- Vendor names on every ranking and chart
- Original COAs with batch details
- Buyer reviews for each vendor
- Price and stock alerts for your watchlist
- Ask Titer, the AI research assistant
Monthly or yearly plans. Cancel either anytime. Compare plans
Lab evidence
Free previewExplore this vendor’s lab reports
Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Pro shows the vendor’s name, its original lab reports and batch details.
- Vendor names on every ranking and chart
- Original COAs with batch details
- Buyer reviews for each vendor
- Price and stock alerts for your watchlist
- Ask Titer, the AI research assistant
Monthly or yearly plans. Cancel either anytime. Compare plans
Lab evidence
Free previewExplore this vendor’s lab reports
Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Pro shows the vendor’s name, its original lab reports and batch details.
- Vendor names on every ranking and chart
- Original COAs with batch details
- Buyer reviews for each vendor
- Price and stock alerts for your watchlist
- Ask Titer, the AI research assistant
Monthly or yearly plans. Cancel either anytime. Compare plans
Lab evidence
Free previewExplore this vendor’s lab reports
Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Pro shows the vendor’s name, its original lab reports and batch details.
- Vendor names on every ranking and chart
- Original COAs with batch details
- Buyer reviews for each vendor
- Price and stock alerts for your watchlist
- Ask Titer, the AI research assistant
Monthly or yearly plans. Cancel either anytime. Compare plans
Lab evidence
Free previewExplore this vendor’s lab reports
Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Pro shows the vendor’s name, its original lab reports and batch details.
- Vendor names on every ranking and chart
- Original COAs with batch details
- Buyer reviews for each vendor
- Price and stock alerts for your watchlist
- Ask Titer, the AI research assistant
Monthly or yearly plans. Cancel either anytime. Compare plans
Lab evidence
Free previewExplore this vendor’s lab reports
Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Pro shows the vendor’s name, its original lab reports and batch details.
- Vendor names on every ranking and chart
- Original COAs with batch details
- Buyer reviews for each vendor
- Price and stock alerts for your watchlist
- Ask Titer, the AI research assistant
Monthly or yearly plans. Cancel either anytime. Compare plans
Lab evidence
Free previewExplore this vendor’s lab reports
Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Pro shows the vendor’s name, its original lab reports and batch details.
- Vendor names on every ranking and chart
- Original COAs with batch details
- Buyer reviews for each vendor
- Price and stock alerts for your watchlist
- Ask Titer, the AI research assistant
Monthly or yearly plans. Cancel either anytime. Compare plans
Lab evidence
Free previewExplore this vendor’s lab reports
Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Pro shows the vendor’s name, its original lab reports and batch details.
- Vendor names on every ranking and chart
- Original COAs with batch details
- Buyer reviews for each vendor
- Price and stock alerts for your watchlist
- Ask Titer, the AI research assistant
Monthly or yearly plans. Cancel either anytime. Compare plans
+ 5 more vendors with fewer certificates.
Published Pt 141 certificates of analysis
Open all 1,259 Pt 141 reports.
Unlock the actual vendor, purity, dose accuracy, lab, batch and saved certificate for every Pt 141 result.
Unlock Pt 141 reportsPro · $14/month or $88/year
Illustrative structure only. No record-level values are present in this preview.
Reading Pt 141 lab reports
A valid report describes the sample that was submitted, not every vial sold under the same name. Guide: How to verify and read a peptide COA: 5 checks.