TitrateLab/Vendors/Lab-data comparison
▸ Peptide vendor reviews backed by lab data
Best peptide vendors and companies, compared with lab evidence.
Bottom line: this page identifies the tracked vendors with the highest average measured purity among those meeting the minimum evidence floor. It ranks observed laboratory results, not overall vendor quality. It cannot establish the quality, identity, or dose accuracy of an untested or future batch, and it is not an endorsement.
The comparison uses 56,251 purity-bearing records from a published corpus of 66,976 laboratory reports attributed to public vendor profiles. Every displayed count and average is calculated from the current corpus.
Newest lab-reported test date: . Research use only.
Published lab records
Purity-bearing records
Vendors meeting the floor
What is ranked. The default order is average measured purity across every purity-bearing record attributed to a vendor. Ties are broken by the screening pass rate, then by the number of purity-bearing records. The screen passes when purity is at least 90% and, when dose-deviation data exists, the result is no more than 10% below the labeled quantity. Missing dose data is not treated as a failure, so dose-data coverage is shown separately on every row. Only vendors with at least 5 purity-bearing records are ranked. Of the 1,715 vendors that clear the bar, this page lists the top 60.
Denominators and exclusions. The 66,976-record corpus contains 56,251 records with a purity result; 43,563 of those also carry dose-deviation data, across 1,519 named compounds. The ranking excludes 2,068 public vendor profiles below the evidence floor. Records without a public vendor attribution do not enter this comparison. The values are extracted from published laboratory records, but the corpus can be affected by who commissioned, selected, or published a report. See the methodology for the source and scoring boundaries.
Ranked vendors
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
100% screening pass
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Evidence99.9% avg purity
94.1% screening pass
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Evidence99.9% avg purity
80% screening pass
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Evidence99.9% avg purity
80% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
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Evidence99.8% avg purity
100% screening pass
Review the evidence behind a company
Open a vendor dossier for batch-level records, or verify a specific laboratory report before relying on an aggregate.
What this ranking is — and is not
This board ranks observed test results over 5+ purity-bearing records. It is not an endorsement to buy from any vendor, and it is not medical, dosing, or purchasing advice. All compounds referenced are for research use only.
Record count is a measure of how much is visible, not of quality. Public testing is not a random market sample; vendors, customers, and testing groups may choose which batches get tested or published. A high average can still hide a bad result, and no historical average predicts an untested batch. Aggregate numbers are a screen, not a verdict.
Vendor attribution can also change when stronger identity evidence appears. See the methodology for sourcing, scoring, exclusions, and correction handling. Browse all tracked public profiles in the peptide vendor review directory.