To maintain good health should periodically do a blood test, so you can easily check whether our entire organism is in order. Blood tests are useful in detecting many diseases and are performed for both children and adults. After the results of a study you should compare them with accepted human standards, to verify the possibility of disease. These professionals make. In order to download the blood into the cabinet must come on an empty stomach. A minimum of two days earlier not allowed drinking alcohol. Blood is recommended to charge only in the morning.