According to GHTF guidelines, which class of medical device would NOT require a premarket on-site inspection?

The classification of medical devices under GHTF (Global Harmonization Task Force) guidelines categorizes devices based on their level of risk. Class A devices are generally considered the lowest risk and include products that pose minimal potential harm to patients or users. Due to this lower risk profile, Class A devices do not require a premarket on-site inspection, as they typically adhere to basic regulatory requirements that are less stringent compared to higher-risk classes.

In contrast, Classes B, C, and D include devices that present higher levels of risk, which necessitate more rigorous scrutiny and oversight, including premarket inspections, to ensure their safety and efficacy before they can be marketed. These higher-risk classifications often require extensive evaluation due to their complexity, potential for harm, and the necessity of ensuring a higher degree of regulatory compliance. Thus, Class A stands out as the category exempt from this requirement in the context of GHTF guidelines.