TitrateLab/Vendors/J&J Research vs Peptaris

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J&J Research vs Peptaris

A head-to-head, evidence-first comparison of J&J Research and Peptaris — built from 2 and 1316 tracked third-party lab records respectively. Exact result/date/dose duplicates are collapsed in the quality comparison so ingestion copies cannot tilt a winner. TitrateLab does not rank or endorse vendors and takes no payment for placement.

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Focus the evidence
J&J Research
2 unique reports
2 metrics
VS
Peptaris
725 unique reports
2 metrics

Lab evidence, side by side

Aggregate trust signals from independent certificates. The leader on each row is highlighted. Purity is measured on the specific batches submitted for analysis and is not a guarantee for any other lot.

J&J Research
 
Peptaris
2
Unique COA reports Exact date/result/dose duplicates are counted once.
725
0.0% 0 reports
Janoshik coverage Share of unique reports attributed to Janoshik.
0.0% 0 reports
99.925%
Average tested purity Mean of positive purity assays; identity failures stay separate.
99.351%
0
Identity failures Labelled compound not detected; fewer is better.
0
0.0% 0 reports
Serious underfill rate Measured fills more than 10% below label; fewer is better.
9.1% 16 reports
0.0% 0 reports
Endotoxin coverage Share reporting an endotoxin result; coverage is not a pass rate.
45.8% 332 reports
2026-03-11
Latest test Recency is context, not proof that a vendor is better.
2026-08-11

Compound and dose comparison

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Most-tested compounds

The peptides each vendor has the most independent certificates for. Click a compound to see its research hub.

J&J Research

Retatrutide1 Tirzepatide1

Peptaris

Retatrutide119 Tirzepatide54 Tesamorelin53 NAD+50 MOTS-C46 BPC-15737

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J&J Research ▸ Full profile
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These figures are purity analytics aggregated from independent third-party certificates of analysis, not vendor claims. Purity is measured on the specific batches submitted for analysis and is not a guarantee for any other lot. This is research-use-only information; TitrateLab does not rank or endorse vendors and this is not a recommendation to purchase or use any product.