1. Match catalog identity to paperwork
Confirm the catalog name on the vial, the invoice, and the COA refer to the same research listing. For stealth catalog codes such as G1-S, G2-T, and G3-R, use the on-site identity only.
2. Read the lot docs, not a homepage percentage
Ask for the lot PDF. Check lot ID, identity method, purity method, date, and laboratory name. See How to read a COA and the reading guide.
3. Confirm RUO boundary language
Supplier terms should state research / in-vitro use only and decline human-use guidance. Compare with our Zero-Tolerance policy.
4. Prefer transparent contact and company details
Look for a reachable contact channel, published company registration, and a coherent shipping/returns policy for research reagents.
5. Keep notebook math in the lab lane
Avoid any supplier tooling that frames human syringe units or personal dosing labels.
Related: Red flags when buying research peptides · COA Library · Contact
Not FDA approved. For research purposes only. Not intended for human consumption, self-administration, or therapeutic use. All products sold for in vitro and laboratory research use only.