Peptide Quality Guide: How to Choose a Supplier
Quality is the most critical factor when selecting a peptide supplier. Low-quality peptides waste money and produce unreliable results. This guide helps researchers evaluate suppliers effectively.
The Five Pillars of Peptide Quality
1. Purity verification: Independent HPLC testing with published results. Proxiva Labs COAs show 99.99% purity. 2. Identity confirmation: Mass spectrometry verifying correct molecular weight. 3. Manufacturing standards: Clean, controlled synthesis environments. USA manufacturing provides oversight advantages. 4. Storage conditions: Proper cold-chain maintenance from production to delivery. 5. Transparency: Accessible COAs, responsive customer support, and clear labeling.
Questions to Ask a Supplier
Can you provide third-party COAs for each batch? Where are your peptides manufactured? What purity standard do you guarantee? How do you handle shipping in extreme temperatures? What is your return policy for quality issues?
Why Proxiva Labs
Proxiva Labs delivers on all five quality pillars: 99.99% purity verified by independent labs, USA manufacturing, temperature-controlled shipping, batch-specific COAs, and responsive customer support.
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