As medical devices, Rapid Test Kits must adhere to strict international standards. Buyers should prioritize suppliers with ISO 13485 certification, which governs medical device quality management systems. Depending on the target market, ensure products have CE Marking (IVDR compliance) for Europe, FDA Emergency Use Authorization (EUA) or 510(k) clearance for the US, or NMPA registration for China-sourced goods. Always verify the Declaration of Conformity and ensure the manufacturer is on the 'White List' if required by export authorities.