Lot-matched COA
The document should reference the same lot code printed on the bottle, not a recycled stock certificate from a different batch.
Buyer due diligence
The peptide supplier checklist buyers should run before checkout.
If you are comparing peptide vendors, the real question is not who has the loudest discount code. It is whether the batch, document, shipping path, and research-use boundaries can survive basic verification.
HPLC + identity method
Look for purity by HPLC and identity confirmation by mass spectrometry. A purity number alone does not prove the compound identity.
Research-use boundaries
A serious supplier keeps research-use labeling visible and does not hide behind dosing advice, disease claims, or medical promises.
Checkout clarity
Payment network, wallet, dispatch target, shipping rate, and order documentation should be clear before funds move.
Six-point scorecard
Use this as a fast screen for vendor pages, forum recommendations, and DMs.
- 01
COA references exact lot code
Reject generic PDFs or old batch screenshots.
- 02
HPLC chromatogram shown or summarized
Purity should be traceable to a method, not just marketing copy.
- 03
Mass-spec identity confirmation
Confirms the compound is the expected molecule.
- 04
Independent retest path
Best when third-party documentation is available or sent after dispatch.
- 05
Research-use disclaimer visible
Avoid vendors that blur into medical, dosing, or treatment claims.
- 06
Shipping and payment expectations visible
No hidden network, no vague dispatch promise, no unclear order path.
Titan’s position
Lot paperwork first. Claims second.
Titan’s sales path is deliberately boring: research-use language, lot release sheet, HPLC purity target, crypto checkout, plain fulfillment terms, and a product page that keeps documentation visible at the point of doubt.
Open peptide buying guide