Blood Glucose Level Say: blud gloo-kose leh-vul Blood glucose level is the amount of glucose in the blood. The body gets glucose, a sugar, from the food we eat. Glucose is carried, through the bloodstream, to all the cells in the body. Like gas for a car, glucose is fuel for the body's cells and gives them energy. Back to Articles Related Articles Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2021 KidsHealth®. All rights reserved. Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.