This book is designed for patients to have a good understanding of the parameters and results of blood testing. Abbreviations, of medical terms and the consequence of testing results higher or lower than the desired range, are explained. The desired ranges for many blood components are listed for several testing labs. Essential minerals and foods that provide these minerals are listed. Explanations of the roles and measurements of essential parameters such as cortisol and cytokines on the immune system are explained. This book should be available in doctor's waiting rooms for patients who want to learn more about the results of blood testing This book does not replace a doctor's analysis of blood test results but adds to the patient's understanding.