Dextran is widely used in medical and biochemical applications due to its biocompatibility and unique properties. In medicine, it serves as a plasma volume expander to treat hypovolemia (low blood volume) caused by surgery, trauma, or severe burns. Its ability to retain water helps stabilize blood pressure and improve circulation. Dextran is also employed in intravenous solutions to prevent blood clots, as it reduces blood viscosity and inhibits platelet aggregation.

In biochemistry and research, dextran is utilized as a molecular sieve in chromatography to separate molecules based on size. It is also a key component in cell culture media, where it stabilizes proteins and enhances cell growth. Additionally, dextran is used in drug delivery systems to create controlled-release formulations, improving the efficacy and targeting of therapeutic agents.

In the food industry, dextran acts as a thickening, stabilizing, and emulsifying agent in products like sauces, dressings, and baked goods. Its versatility and safety make it a valuable compound across various fields.