If you have high levels of granulocytes (granulocytosis), it can be a sign of a problem.

Granulocytes are typically checked as part of acomplete blood count(CBC) blood test.

However, high immature granulocyte levels can also be normal during pregnancy and in newborns.

blood cells

KATERYNA KON / SCIENCE PHOTO LIBRARY / Getty Images

KATERYNA KON / SCIENCE PHOTO LIBRARY / Getty Images

What Are Granulocytes?

What Are the Functions of Granulocytes?

Granulocytes are white blood cells that play a very important role in managing the immune system.

They are the first cells to respond to an infection and help the body with mediating allergies.

Each granulocyte has a specialized function within the body:

What Causes High Granulocyte Levels?

Granulocyte levels are often high when the immune system is activated.

High granulocytes can also be a sign of a chronic medical condition or cancer of the blood cells.

For example, if you have a bacterial infection, you may need to take antibiotics.

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