≥99% HPLC — the research significance

A ≥99% pure peptide has <1% unknown material. A 95% pure peptide contains 5% impurities — potentially bioactive deletion sequences, oxidation products, or synthesis byproducts. The purity standard directly determines research reproducibility.

Janoshik independent COA

QSC does not self-certify. Every batch goes to Janoshik Analytical — an independent third-party lab that issues the COA based on their own HPLC and MS analysis. No conflict of interest. Verifiable.

Batch-by-batch testing

Every QSC batch gets its own Janoshik COA — not periodic sampling from a production run. Each order has traceable, individual quality documentation.

Are research peptides safe to work with in a lab?

Research peptides at ≥99% HPLC from verified suppliers with Janoshik COA are appropriate for standard laboratory research. Standard lab PPE applies. Primary considerations: correct reconstitution, proper storage, verified COA.

Do peptides cause side effects in animal research?

Side effects are compound- and dose-dependent. GLP-1R agonists produce GI effects at pharmacological doses. GHRPs produce GH pulses affecting IGF-1 and body composition. Melanocortins affect appetite and sexual behaviour at MC4R. Understanding the target receptor predicts expected biological effects.

What makes a research peptide unsafe?

Main risks: (1) low purity — impurities cause unpredictable biology, (2) wrong identity — mislabelled compound, (3) endotoxin contamination, (4) improper storage — degraded peptide. All four managed by ≥99% HPLC + independent COA + correct storage.

Are QSC peptides quality verified?

Every QSC batch is independently tested by Janoshik Analytical for HPLC purity (≥99%) and MS identity. QSC compounds are sold strictly for laboratory research only — not for human administration.