Saccharides are essential organic compounds that perform important biological functions in living organisms. They serve as major sources of energy and contribute to the formation of several cellular structures. Saccharides are primarily composed of carbon, hydrogen, and oxygen, and their chemical properties vary according to their molecular structures and glycosidic bonds. Saccharides are commonly classified into three major groups: monosaccharides, disaccharides, and polysaccharides. Monosaccharides include glucose and fructose, while disaccharides include sucrose and lactose. Polysaccharides include starch, glycogen, and cellulose. Glucose is one of the most important monosaccharides because cells use it to produce energy through metabolic pathways such as glycolysis and cellular respiration. Glycogen functions as a storage form of glucose in the liver and muscles, while cellulose is an important structural component of plant cell walls. In analytical chemistry, certain carbohydrates can be detected using chemical tests such as Benedict's test for reducing sugars and Molisch's test for carbohydrates. Advanced chromatographic and enzymatic methods are also used to identify different sugars and determine their concentrations. In forensic science, the study of saccharides can contribute to the examination of biological materials, food samples, and unknown chemical substances. Carbohydrate analysis may help forensic laboratories investigate food adulteration and characterize materials recovered during investigations. In conclusion, saccharides represent an important class of organic compounds with significant biological and chemical functions. Understanding their structures and properties contributes to the development of laboratory methods and supports selected medical and forensic applications.