Peptide vendor lab results
Where lab tests
found problems.
Compare recorded test failures within each seller group. Counts show what was found in tested samples, not everything a vendor sells.
International vendors
Underfilled samples
Counts valid quantity results at least 10% below the stated amount. Tests can compare against different claims; inspect the original report before comparing individual products.
Across international vendors in this comparison
501 recorded failures across 5,515 applicable results from 30 vendors.
1,294 other eligible records have no included result for this check. Missing and excluded measurements never count as passes.
Latest eligible report: 2026-08-31. Each row below shows one vendor’s own test history.
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01 Vendor identity hiddenExplore test results 46failures / 327 tests 14.1%share of tests · 3 sources 2026-05-06latest lab result
Inside the lab evidence
Public preview46 failures in 327 applicable results from this vendor
RetatrutideExplore failed COAs11 / 98 failures / results
- At least 10% short 11
Largest measured shortfall 88.8%
BPC-157Explore failed COAs7 / 15 failures / results
- At least 10% short 7
Largest measured shortfall 26.9%
TesamorelinExplore failed COAs6 / 28 failures / results
- At least 10% short 6
Largest measured shortfall 49.5%
GHK-CuExplore failed COAs6 / 13 failures / results
- At least 10% short 6
Largest measured shortfall 23%
TirzepatideExplore failed COAs4 / 76 failures / results
- At least 10% short 4
Largest measured shortfall 59.7%
Explore all 13 compounds with failures
Showing 5 of 13 compound groups with failures. 24 other eligible records have no applicable result for this comparison. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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02 Vendor identity hiddenExplore test results 43failures / 271 tests 15.9%share of tests · 2 sources 2026-08-13latest lab result
Inside the lab evidence
Public preview43 failures in 271 applicable results from this vendor
RetatrutideExplore failed COAs12 / 74 failures / results
- At least 10% short 12
Largest measured shortfall 45.5%
TirzepatideExplore failed COAs8 / 53 failures / results
- At least 10% short 8
Largest measured shortfall 67.9%
GHK-CuExplore failed COAs6 / 22 failures / results
- At least 10% short 6
Largest measured shortfall 43.3%
TesamorelinExplore failed COAs5 / 26 failures / results
- At least 10% short 5
Largest measured shortfall 49.3%
CagrilintideExplore failed COAs4 / 14 failures / results
- At least 10% short 4
Largest measured shortfall 14%
Explore all 11 compounds with failures
Showing 5 of 11 compound groups with failures. 20 other eligible records have no applicable result for this comparison. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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03 Vendor identity hiddenExplore test results 41failures / 355 tests 11.5%share of tests · 3 sources 2026-08-13latest lab result
Inside the lab evidence
Public preview41 failures in 355 applicable results from this vendor
RetatrutideExplore failed COAs10 / 123 failures / results
- At least 10% short 10
Largest measured shortfall 55%
GHK-CuExplore failed COAs10 / 35 failures / results
- At least 10% short 10
Largest measured shortfall 40.4%
TesamorelinExplore failed COAs5 / 22 failures / results
- At least 10% short 5
Largest measured shortfall 53%
TirzepatideExplore failed COAs3 / 49 failures / results
- At least 10% short 3
Largest measured shortfall 27.8%
BPC-157Explore failed COAs2 / 32 failures / results
- At least 10% short 2
Largest measured shortfall 20.9%
Explore all 13 compounds with failures
Showing 5 of 13 compound groups with failures. 7 other eligible records have no applicable result for this comparison. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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04 Vendor identity hiddenExplore test results 36failures / 293 tests 12.3%share of tests · 2 sources 2026-08-21latest lab result
Inside the lab evidence
Public preview36 failures in 293 applicable results from this vendor
GHK-CuExplore failed COAs17 / 24 failures / results
- At least 10% short 17
Largest measured shortfall 30.6%
RetatrutideExplore failed COAs7 / 138 failures / results
- At least 10% short 7
Largest measured shortfall 38.4%
BPC-157Explore failed COAs4 / 21 failures / results
- At least 10% short 4
Largest measured shortfall 10.9%
TesamorelinExplore failed COAs2 / 21 failures / results
- At least 10% short 2
Largest measured shortfall 23.33%
TirzepatideExplore failed COAs1 / 39 failures / results
- At least 10% short 1
Largest measured shortfall 29.6%
Explore all 10 compounds with failures
Showing 5 of 10 compound groups with failures. 18 other eligible records have no applicable result for this comparison. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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05 Vendor identity hiddenExplore test results 31failures / 305 tests 10.2%share of tests · 4 sources 2026-08-21latest lab result
Inside the lab evidence
Public preview31 failures in 305 applicable results from this vendor
RetatrutideExplore failed COAs8 / 104 failures / results
- At least 10% short 8
Largest measured shortfall 65.7%
TirzepatideExplore failed COAs6 / 103 failures / results
- At least 10% short 6
Largest measured shortfall 31.3%
SemaglutideExplore failed COAs5 / 12 failures / results
- At least 10% short 5
Largest measured shortfall 41.9%
GHK-CuExplore failed COAs4 / 17 failures / results
- At least 10% short 4
Largest measured shortfall 27.5%
BPC-157Explore failed COAs3 / 17 failures / results
- At least 10% short 3
Largest measured shortfall 49.1%
Explore all 9 compounds with failures
Showing 5 of 9 compound groups with failures. 13 other eligible records have no applicable result for this comparison. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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06 Vendor identity hiddenExplore test results 28failures / 155 tests 18.1%share of tests · 1 source 2026-08-13latest lab result
Inside the lab evidence
Public preview28 failures in 155 applicable results from this vendor
RetatrutideExplore failed COAs10 / 60 failures / results
- At least 10% short 10
Largest measured shortfall 65.2%
GHK-CuExplore failed COAs7 / 21 failures / results
- At least 10% short 7
Largest measured shortfall 56.3%
TesamorelinExplore failed COAs4 / 16 failures / results
- At least 10% short 4
Largest measured shortfall 46%
BPC-157Explore failed COAs4 / 11 failures / results
- At least 10% short 4
Largest measured shortfall 60.2%
TirzepatideExplore failed COAs2 / 31 failures / results
- At least 10% short 2
Largest measured shortfall 17.3%
Explore all 6 compounds with failures
Showing 5 of 6 compound groups with failures. 9 other eligible records have no applicable result for this comparison. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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07 Vendor identity hiddenExplore test results 27failures / 476 tests 5.7%share of tests · 3 sources 2026-08-13latest lab result
Inside the lab evidence
Public preview27 failures in 476 applicable results from this vendor
RetatrutideExplore failed COAs7 / 139 failures / results
- At least 10% short 7
Largest measured shortfall 56.6%
TirzepatideExplore failed COAs6 / 129 failures / results
- At least 10% short 6
Largest measured shortfall 44%
TesamorelinExplore failed COAs5 / 32 failures / results
- At least 10% short 5
Largest measured shortfall 45.4%
GHK-CuExplore failed COAs3 / 49 failures / results
- At least 10% short 3
Largest measured shortfall 16.2%
SermorelinExplore failed COAs3 / 5 failures / results
- At least 10% short 3
Largest measured shortfall 49.7%
Explore all 8 compounds with failures
Showing 5 of 8 compound groups with failures. 33 other eligible records have no applicable result for this comparison. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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08 Vendor identity hiddenExplore test results 24failures / 953 tests 2.5%share of tests · 5 sources 2026-08-31latest lab result
Inside the lab evidence
Public preview24 failures in 953 applicable results from this vendor
RetatrutideExplore failed COAs5 / 106 failures / results
- At least 10% short 5
Largest measured shortfall 71.08%
Other compoundsExplore failed COAs4 / 170 failures / results
- At least 10% short 4
Largest measured shortfall 15.4%
TirzepatideExplore failed COAs4 / 98 failures / results
- At least 10% short 4
Largest measured shortfall 28.7%
BPC-157Explore failed COAs4 / 51 failures / results
- At least 10% short 4
Largest measured shortfall 15.6%
GHK-CuExplore failed COAs3 / 44 failures / results
- At least 10% short 3
Largest measured shortfall 44.6%
Explore all 9 compounds with failures
Showing 5 of 9 compound groups with failures. 351 other eligible records have no applicable result for this comparison. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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09 Vendor identity hiddenExplore test results 21failures / 291 tests 7.2%share of tests · 4 sources 2026-08-13latest lab result
Inside the lab evidence
Public preview21 failures in 291 applicable results from this vendor
RetatrutideExplore failed COAs10 / 40 failures / results
- At least 10% short 10
Largest measured shortfall 61.2%
TirzepatideExplore failed COAs2 / 55 failures / results
- At least 10% short 2
Largest measured shortfall 14.1%
SemaglutideExplore failed COAs2 / 20 failures / results
- At least 10% short 2
Largest measured shortfall 14%
GHK-CuExplore failed COAs2 / 11 failures / results
- At least 10% short 2
Largest measured shortfall 13.4%
Other compoundsExplore failed COAs1 / 35 failures / results
- At least 10% short 1
Largest measured shortfall 12.12%
Explore all 9 compounds with failures
Showing 5 of 9 compound groups with failures. 229 other eligible records have no applicable result for this comparison. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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10 Vendor identity hiddenExplore test results 21failures / 136 tests 15.4%share of tests · 1 source 2026-07-20latest lab result
Inside the lab evidence
Public preview21 failures in 136 applicable results from this vendor
RetatrutideExplore failed COAs6 / 60 failures / results
- At least 10% short 6
Largest measured shortfall 48.2%
TirzepatideExplore failed COAs5 / 29 failures / results
- At least 10% short 5
Largest measured shortfall 47.6%
BPC-157Explore failed COAs3 / 13 failures / results
- At least 10% short 3
Largest measured shortfall 24.4%
TesamorelinExplore failed COAs2 / 8 failures / results
- At least 10% short 2
Largest measured shortfall 82.4%
CagrilintideExplore failed COAs2 / 6 failures / results
- At least 10% short 2
Largest measured shortfall 38%
Explore all 8 compounds with failures
Showing 5 of 8 compound groups with failures. 4 other eligible records have no applicable result for this comparison. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
Connect these results to a vendor.Reveal vendor with ProPro reveals the name and gives you access to the lab-report archive.
Showing up to 10 vendors with at least 10 applicable results each. Ordered by the number of failed results, so heavily tested vendors may appear higher. Read the count and share together. Duplicate certificates are excluded. Missing tests never count as passes. Latest included report: 2026-08-31. Method and limitations →