Compare lab measurements, vendor test histories and original reports for Tamoxifen.
What the Tamoxifen record shows
Evidence through 2025-10-13
TitrateLab tracks 19 published Tamoxifen certificate-of-analysis source records through 2025-10-13, each with a recorded purity or measured-versus-label amount result. Across 2 records with a numeric peptide-purity result, including zero, the median reported purity is 96.7%. Across 17 records with measured-versus-label dose data, 76% 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: 2026-09-26T16:09:32.694581+00:00. Calculation time is not a test date.
Published records19
Reported purity96.7% median · 2 results
Dose accuracy76% within ±10% · 17 results
EndotoxinNot reported
Evidence dates2019-08-24 to 2025-10-13
Limits and missing evidence
No classifiable endotoxin results were recorded.
Coverage depends on reports that were published and available to ingest.
Assay metrics
Tamoxifen lab-testing metrics
19
Certificates
96.7%
Median reported purity (zero included)
0%
Purity records ≥ 99%
0
Source records reporting zero purity
1
Testing labs
15
Vendors
Mean purity96.7%Below 90% purity0%Mean dose vs label+9.3%Underfilled0%Within 10% of label dose76%Overdosed ≥ +7%24%Underdosed ≤ −7%12%
COAs per testing lab
Every lab testing Tamoxifen in the corpus.
Janoshik1996.7% med
Tested-purity distribution
Bins below 90% tested purity (0% of numeric purity records).
Tamoxifen tested-purity distribution
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%
1
98–99%
0
99–100%
0
COAs over time
Tamoxifen source records by test month (discovery month when test date is absent).
Tamoxifen certificates per month
Month
Certificates
2019-08
1
2021-01
1
2021-02
2
2021-05
1
2022-08
1
2023-01
1
2023-03
2
2023-05
1
2023-08
1
2024-02
1
2024-06
1
2024-08
1
2024-09
1
2025-01
2
2025-07
1
2025-10
1
Most-tested vendors
Top 10 of 15 vendors by Tamoxifen certificate count.
This chart compares report counts for this compound. A larger test history does not establish better purity, dose accuracy or endotoxin results. Inspect the individual reports to compare measurements.
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Lab evidence
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2 lab reports from this vendor
This chart compares report counts for this compound. A larger test history does not establish better purity, dose accuracy or endotoxin results. Inspect the individual reports to compare measurements.
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Lab evidence
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2 lab reports from this vendor
This chart compares report counts for this compound. A larger test history does not establish better purity, dose accuracy or endotoxin results. Inspect the individual reports to compare measurements.
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Lab evidence
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2 lab reports from this vendor
This chart compares report counts for this compound. A larger test history does not establish better purity, dose accuracy or endotoxin results. Inspect the individual reports to compare measurements.
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Lab evidence
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1 lab reports from this vendor
This chart compares report counts for this compound. A larger test history does not establish better purity, dose accuracy or endotoxin results. Inspect the individual reports to compare measurements.
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Lab evidence
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1 lab reports from this vendor
This chart compares report counts for this compound. A larger test history does not establish better purity, dose accuracy or endotoxin results. Inspect the individual reports to compare measurements.
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Lab evidence
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1 lab reports from this vendor
This chart compares report counts for this compound. A larger test history does not establish better purity, dose accuracy or endotoxin results. Inspect the individual reports to compare measurements.
TitrateLab ProWhich vendor is this?
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Lab evidence
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1 lab reports from this vendor
This chart compares report counts for this compound. A larger test history does not establish better purity, dose accuracy or endotoxin results. Inspect the individual reports to compare measurements.
TitrateLab ProWhich vendor is this?
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Lab evidence
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1 lab reports from this vendor
This chart compares report counts for this compound. A larger test history does not establish better purity, dose accuracy or endotoxin results. Inspect the individual reports to compare measurements.
TitrateLab ProWhich vendor is this?
Pro shows the vendor’s name, its original lab reports and batch details.
Vendor behind these reportsVendor name available with Pro
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Vendor name available with ProExplore reports +1
Lab evidence
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1 lab reports from this vendor
This chart compares report counts for this compound. A larger test history does not establish better purity, dose accuracy or endotoxin results. Inspect the individual reports to compare measurements.
TitrateLab ProWhich vendor is this?
Pro shows the vendor’s name, its original lab reports and batch details.
Vendor behind these reportsVendor name available with Pro