What is blood glucose (sugar)?

Blood glucose, also known as blood sugar, is an energy source for muscles and other tissue cells that comes from food and your liver. Sugar enters the bloodstream, gets absorbed, and enters the cells with the help of insulin. If your blood glucose levels are low (such as from a lack of eating), stored glycogen in the liver is broken down into glucose to keep your glucose levels within a normal range.

LBL019054 Rev002

Related articles

What is low blood glucose?

Low blood glucose, known as low blood sugar or hypoglycemia, is when your blood glucose levels fall below 70 mg/dL. Symptoms can set in quickly and include dizziness, anxiety, cold sweats and more.
  • Read more

What is a normal blood glucose level?

Normal or usual plasma blood glucose (sugar) levels range depending on the time of day, meals and other factors. Use this chart to determine your optimal range.

What is the A1C test?

The A1C test, also known as a glycohemoglobin or hemoglobin (Hb) A1C test..
Privacy PolicyTerms of Use

LBL-1001419 Rev008

LBL019054 Rev002

© Dexcom, Inc. All rights reserved.

US flag