MedicalTerminology DB
General Medical Terms Blood & Lymphatic System

granulocyte-macrophage colony-stimulating factor

Meaning of granulocyte-macrophage colony-stimulating factor: A substance that helps make more white blood cells, especially granulocytes, macrophages, and cells that become platelets.

Definition of granulocyte-macrophage colony-stimulating factor

A substance that helps make more white blood cells, especially granulocytes, macrophages, and cells that become platelets. It is a cytokine that is a type of hematopoietic (blood-forming) agent. Also called GM-CSF and sargramostim.

Written and maintained by James Murray Last updated July 21, 2026 Educational reference, not medical advice. Read the limitations.

For learning, not diagnosis. This glossary provides general educational information and is not a substitute for advice from a qualified healthcare professional. If you may be experiencing a medical emergency, contact local emergency services.