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100% Third-Party Tested Research Peptides
Browse our complete catalog of third-party tested research peptides with published HPLC chromatograms and Mass Spectrometry reports from accredited analytical laboratories like Janoshik Analytical.
≥99% HPLC Verified
Janoshik Analytical COAs
1–3 Day USA Domestic Shipping
Research Use Only (RUO)
Verified Laboratory Research Fact Card
Key Specifications & Live Sourcing Metrics: 100% Third-Party Tested Research Peptides
Primary laboratory research specifications, pricing benchmarks, purity verifications, and domestic fulfillment data for 100% Third-Party Tested Research Peptides.
Purity Benchmark
>=99.0% HPLC Verified Purity
Testing Methodology
High-Performance Liquid Chromatography & Mass Spectrometry
COA Availability
Publicly downloadable PDFs with verification keys
Fulfillment
Orders before 4:30 PM CT ship same-day from USA
Verified In-Stock Compounds
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Frequently Asked Questions
Why is third-party testing non-negotiable for research peptides?
In-house manufacturer COAs carry inherent conflicts of interest and often overstate purity. Independent third-party analytical laboratories (like Janoshik Analytical) provide unbiased, batch-specific verification of sequence identity and chromatographic purity.
How do I read an HPLC chromatogram on a peptide COA?
An HPLC chromatogram plots UV absorbance against retention time. A single sharp peak with greater than 99% area under the curve (AUC) indicates high purity. Secondary peaks indicate synthesis deletions or truncated sequences.
What does Mass Spectrometry prove that HPLC cannot?
HPLC proves that a sample consists of a single pure compound, but it does not confirm molecular identity. Mass Spectrometry measures the exact mass-to-charge ratio (m/z) to confirm that the sequence matches the theoretical molecular weight.
Verified Laboratory Standard
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Contact our laboratory support team for volume pricing, custom mg formulation, and batch-specific analytical documentation.