What is gran and in hematology test?

In hematology, GRAN stands for "granulocytes". Granulocytes are a type of white blood cell that contains granules in their cytoplasm. They are also known as polymorphonuclear leukocytes (PMNs) because their nuclei have multiple lobes or segments.

There are three types of granulocytes:

* Neutrophils are the most common type of granulocyte. They are phagocytic, meaning that they can engulf and destroy foreign particles. Neutrophils are also involved in the inflammatory response.

* Eosinophils are less common than neutrophils. They are involved in the defense against parasitic infections and allergic reactions.

* Basophils are the least common type of granulocyte. They are involved in the release of histamine and other inflammatory mediators.

Granulocytes are produced in the bone marrow and they circulate in the bloodstream. They are released into the tissues in response to infection or inflammation.

The number of granulocytes in the blood can be affected by a variety of factors, including:

* Infection

* Inflammation

* Cancer

* Certain medications

* Pregnancy

A high granulocyte count may indicate an infection or inflammation. A low granulocyte count may indicate a bone marrow problem or a viral infection.

Granulocytes are an important part of the immune system. They help to protect the body from infection and inflammation.