About the reference sources Health uses to categorize lab results

Learn about the trusted medical and scientific organizations that the Health app uses to help categorize certain lab and measurement-based results.

Health uses trusted medical and scientific organizations to help categorize certain lab and measurement-based results for deeper insights into your health, including the National Heart, Lung, and Blood Institute, the National Cholesterol Education Program, the U.S. Centers for Disease Control and Prevention, The National Health & Nutrition Examination Survey, the World Health Organization, and collaborating clinical laboratories. These reference sources are used only to support how your results are categorized within the app. Your data is never shared with these organizations.

Descriptive labels are provided to help you understand your results at a glance and do not represent a clinical evaluation. Only your healthcare provider can interpret what these results mean for you in the context of your full medical history, symptoms, and other test findings. Reference ranges may differ by lab. Check your detailed results for the most accurate information.