GB 16005-2009

This standard defines the criteria and methodology for classifying geographic areas in China as endemic for iodine deficiency disorders (IDD), based on population iodine levels and goiter prevalence. It is applied by public health authorities and medical institutions to identify regions requiring targeted iodine supplementation programs, such as salt iodization, and to monitor the effectiveness of IDD prevention and control efforts. The standard is specifically used in epidemiological surveys, health policy planning, and resource allocation for iodine deficiency interventions across Chinese provinces and counties.