Clinical chemistry is a science that requires specific knowledge and teaching. The e-book covers several topics in clinical nephrology. Patients suffering from severe chronic kidney disease may be quasi asymptomatic. This lack of overt symptomatology suggests that clinical laboratory tests are of the highest importance. Clinicians treating patients and clinical biologists operating in laboratories are often far apart from each other. They have a lot of things to share and to learn from each other. This e-book bridges the gap between these two groups of health professionals.