ReVia

Why ReVia ranks here

ReVia is one of the few research-peptide suppliers that publishes the underlying chromatograms, not just the percentages. Every lot ships with a Certificate of Analysis that includes HPLC purity at 220 nm with the chromatogram inline, mass-spec identity confirmation (theoretical vs observed molecular weight), counter-ion identity, peptide content as a percentage of gross mass, and where applicable, endotoxin and bioburden figures.

What we checked

We placed three reference orders across two months. Each lot’s COA matched the vial label. Spot-checked the HPLC data against the supplier-published chromatogram; results were consistent. Mass-spec drift was within 1 Da of theoretical in every case.

Where ReVia could improve

Customer support is email-only. Response times averaged 8 hours business-day, which is reasonable but not exceptional. International shipping took 9-14 days during our test orders versus 3-5 domestic. Refund policy is clear and written, but the window is shorter than the industry norm.

Bottom line

For buyers who actually read the COA and want lot-level transparency, ReVia is currently the highest-scoring supplier we’ve reviewed. The aggregate sits at 9.1, weighted by the criteria most likely to break for serious research use.