Dextran is widely used in the medical field as a plasma volume expander. It is administered intravenously to treat or prevent shock following severe blood loss due to trauma, surgery, or other conditions. Its ability to increase blood volume and improve circulation makes it valuable in emergency and surgical settings.

In biotechnology and research, dextran serves as a coating material for cell culture surfaces, promoting cell attachment and growth. It is also used in chromatography as a size-exclusion medium to separate molecules based on their size.

Additionally, dextran is utilized in the food industry as a stabilizer, thickener, and texturizer in various products. Its water-soluble properties make it suitable for improving the consistency and shelf life of food items.

In ophthalmology, dextran is a component of certain eye drops and contact lens solutions, providing lubrication and moisture retention for dry eyes.

Its biocompatibility and versatility make dextran a valuable material across multiple industries.