Research Peptides, Verified Before They Ship

Always ask for a Certificate of Analysis (COA) — if the supplier hesitates, walk away. At CoreVionRX, every batch gets independent third-party HPLC plus mass spec, and we don't charge extra for the paperwork. When you read a COA, check three things: purity should be 99%+, the molecular weight should match what the peptide is supposed to be, and endotoxin should be under 0.01 EU/mg. If any of those numbers are missing or look weird, the batch is suspect. We had a vendor last year send us BPC-157 that mass spec'd as something completely different — that's why we test everything ourselves now.

HPLC is basically a really fancy filter that tells you what's actually in your vial. The machine pumps your sample through a specialized column at high pressure — the peptide moves through at a specific speed based on its molecular properties, while impurities move at different speeds. The detector at the end measures how much of each thing comes out. A 99%+ result means 99% of what was in the vial was your actual peptide, and the other 1% was mostly water, salts, or synthesis leftovers. Is 98% terrible? Not always — depends on your study. But we don't ship anything under 99% because most of our customers need that level of consistency.

Yes. Every peptide order from CoreVionRX ships with a complete Certificate of Analysis documenting HPLC purity results, mass spectrometry identity confirmation, endotoxin levels, batch number, manufacturing date, and recommended storage conditions. We believe full documentation transparency is non-negotiable for serious research.

Lyophilized peptides (the powder in the vial) go in the freezer at -20°C, sealed, in the dark. Don't let them sit on your bench for a week — moisture from the air will degrade them. Once you reconstitute with bacteriostatic water, store at 2-8°C (fridge, not freezer) and use within 30 days. Here's a tip most people miss: draw the water slowly down the inside wall of the vial, don't squirt it directly into the powder. And definitely don't shake — swirl gently. We learned that the hard way with a $2,000 batch of TB-500 that we agitated too aggressively.

All CoreVionRX peptides are synthesized by GMP-certified manufacturing partners in the United States. We independently audit every batch through third-party laboratories before adding products to our inventory. This dual-verification process — manufacturer testing plus independent confirmation — ensures the highest quality standards in the research peptide industry.