Alsever's Solution is primarily used in the field of hematology and immunology for the preservation of red blood cells. It is commonly employed as an anticoagulant and storage medium for blood samples, particularly in laboratory settings where blood needs to be stored for extended periods without clotting or degradation. The solution helps maintain the viability and integrity of red blood cells by providing an optimal environment that prevents hemolysis and bacterial growth. This makes it valuable in blood transfusion research, compatibility testing, and immunological studies. Additionally, Alsever's Solution is utilized in the preparation of blood samples for various diagnostic procedures, ensuring accurate and reliable results in clinical and experimental analyses.