Which law amended sections 16, 21, and 22 of RA 5527?

The law that amended sections 16, 21, and 22 of Republic Act 5527 is Republic Act 6138. This amendment is significant as it addresses various aspects related to the regulation and standardization of medical technology and laboratory services in the Philippines. Specifically, the amendments aimed to enhance the authority and functions of the regulatory body overseeing the practice and ensure stricter compliance with professional standards.

To understand the broader context, these sections pertain to the qualifications and registration processes for medical technology practitioners, which are crucial for maintaining safety and efficacy in medical laboratory practices. By revising these sections, RA 6138 sought to bolster the integrity of the profession and protect public health.

In contrast, the other laws mentioned (RA 1517, RA 4688, and RA 1534) pertain to different areas of health regulation and do not specifically address the amendments required for RA 5527 concerning medical technology. Thus, their relevance to the specific sections in question is limited. This distinction highlights the importance of knowing which legislative measures have a direct impact on medical technology law and practice.