Indubitably a serious commitment with the health services includes metrological insurance, for the control and nonstop improvement of the quality. The metrological insurance is the process that establishes unambiguously all which must be measured, as it must be measured and how good the measure must to be. Unfortunately owing to different causes, that the author will not approach in this work, too much lending services institutions of health care are walking in field undermined regarding to the metrology. We suggested some recommendations in this work, based in the international standards in use, to the interested professionals in the quality's nonstop improvement, with emphasis in metrological insurance and focused toward that the lending services unit of health must make. Although it will probably require some modification as standardized data gathering and gain working experience, it is our hope that this approach will become generally accepted within the health care institutions.