It is very reliable diagnostic rating exam.A diagnostic test is any kind of medical test performed to aid in the diagnosis or detection of disease. For example:to diagnose diseases, and preferably sub-classify it regarding, for example, severity and treatability,to confirm that a person is free from disease.A diagnostic test is a procedure performed to confirm, or determine the presence of disease in an individual suspected of having the disease, usually following the report of symptoms, or based on the results of other medical tests. Such tests include:Utilizing nuclear medicine techniques to examine a patient having a lymphoma.Measuring the blood sugar in a person suspected of having diabetes mellitus, after periods of increased urination. Taking a complete blood count of an individual experiencing a high fever, to check for a bacterial infection. Monitoring electrocardiogram readings on a patient suffering chest pain, to diagnose or determine any heart irregularities.