Tests of blood and urine - the two “main” fluids of the body, the composition of which has been studied in detail, can tell the doctor a lot. To a person not knowledgeable in medicine, the test results, of course, will not tell so much. But at least a little guidance in these results, at least knowing “where to run” (and is it really necessary to “run”) - probably, none of us will find it superfluous. This book will help you understand what methods for examining blood and urine used to make a diagnosis; why and how they are carried out; as evidenced by deviations from the norm. The book is intended for a wide range of readers.