Letrozole COA — Verified Certificate of Analysis Results
22 independent third-party certificates of analysis for Letrozole, from 2 labs across 16 vendors (2019-08-13 to 2026-06-26).
Every Letrozole certificate of analysis below is from an independent third-party lab, ingested and verified by TitrateLab. The figures here are computed live from the 22 published Letrozole certs in our corpus.
Assay metrics
Letrozole lab-testing metrics
98%
Median tested purity
0
Zero-purity certs
Mean purity98%
Mean dose vs label-0.4%
Within 10% of label dose80%
Overdosed ≥ +7%35%
Underdosed ≤ −7%10%
COAs per testing lab
Every lab testing Letrozole in the corpus.
Tested-purity distribution
Bins below 90% tested purity.
| Purity range | Certificates |
|---|---|
| 0–50% | 0 |
| 50–70% | 0 |
| 70–80% | 0 |
| 80–85% | 0 |
| 85–90% | 0 |
| 90–91% | 0 |
| 91–92% | 0 |
| 92–93% | 0 |
| 93–94% | 0 |
| 94–95% | 0 |
| 95–96% | 0 |
| 96–97% | 1 |
| 97–98% | 0 |
| 98–99% | 0 |
| 99–100% | 1 |
COAs over time
Letrozole certificates published per month.
| Month | Certificates |
|---|---|
| 2019-08 | 1 |
| 2021-01 | 1 |
| 2021-02 | 1 |
| 2021-03 | 1 |
| 2022-08 | 1 |
| 2022-12 | 1 |
| 2023-03 | 3 |
| 2023-05 | 2 |
| 2023-08 | 1 |
| 2024-01 | 1 |
| 2024-02 | 2 |
| 2024-06 | 1 |
| 2024-07 | 1 |
| 2024-08 | 1 |
| 2024-10 | 1 |
| 2025-04 | 1 |
| 2025-07 | 1 |
| 2026-06 | 1 |
Most-tested vendors
Top 10 of 15 vendors by Letrozole certificate count.
See who tests most — unlock the vendor names with Pro.
+ 5 more vendors with fewer certificates.
Verified Letrozole certificates of analysis
22 records. Zero guesswork.
Unlock the actual vendor, purity, dose accuracy, lab, batch and saved certificate for every Letrozole result.
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