What is neutrophilic metamyelocytes?

Neutrophilic metamyelocytes are immature white blood cells that are part of the neutrophil lineage. They are formed in the bone marrow and are released into the bloodstream when the body needs to fight an infection or injury.

Metamyelocytes are a stage in the development of neutrophils, following the blast form and myelocyte form. They are characterized by a kidney-shaped nucleus and small cytoplasmic granules. Neutrophilic metamyelocytes make up a small percentage of the circulating white blood cells and are usually only found in small numbers in the peripheral blood.

An increase in the number of neutrophilic metamyelocytes in the peripheral blood can be a sign of an infection or inflammation. However, it can also be seen in certain types of leukemia. A healthcare provider will consider the patient's symptoms, medical history, and other laboratory findings to determine the cause of the increase in neutrophilic metamyelocytes.

Overall, neutrophilic metamyelocytes play an important role in the immune system's response to infection and injury.