Diagnostic tests in the laboratory play a crucial role in identifying diseases and assessing individuals’ overall health. These tests can include blood, urine, saliva, and even tissue samples, helping doctors diagnose infectious diseases, metabolic disorders, hormonal imbalances, and many other conditions. Blood tests, in particular, provide important information about glucose levels, lipids, vitamins, and the function of organs such as the liver and kidneys. Urine tests can detect urinary tract infections or kidney problems. Additionally, genetic and molecular tests enable the identification of hereditary diseases or specific drug sensitivities. The use of these tests helps doctors achieve more accurate diagnoses and select the appropriate treatment for each patient. Below is a categorization of various tests performed by the laboratory for disease diagnosis: