In-house HPLC and LC-MS analysis on research peptides. Verified American results, published for the world to see.
Pearsey is a grey-market peptide testing lab based in Coeur d'Alene, Idaho. We test batches submitted by peptide vendors and research suppliers, then publish the results so buyers can verify what they're getting — before it ever reaches them.
Every test is performed at our Coeur d'Alene facility using professional-grade HPLC and LC-MS instrumentation — no outsourcing, no guesswork.
Batch reports are posted publicly on our site. Vendors link directly to our findings so their customers can verify purity and identity from a neutral third party.
Operated entirely in the United States. Our results are not influenced by suppliers, vendors, or anyone with a financial stake in the outcome.
Reach out through our contact form and one of our associates will walk you through the submission process to get your batch analyzed quickly.
We use two complementary analytical techniques that together provide both quantitative purity data and definitive compound identification.
Separates the components of a sample and quantifies each by concentration. Gives us precise purity percentages and flags unknown peaks that may indicate contaminants or degradation products.
Pairs chromatographic separation with mass detection to confirm the molecular identity of a compound by its exact mass and fragmentation pattern — the gold standard for peptide authentication.
Submit your peptide batch for HPLC and LC-MS analysis. Fill out our contact form and an associate will reach out to facilitate the process.
Browse our published batch results. Each report includes purity percentage, compound identity confirmation, and full chromatography data.
Order directly from a compound page — no contact form required. Select your add-ons, submit, and we handle the rest.