Neutrophil Segment Count in Blood (Qualitative or Semi-Quantitative)

What Neutrophils Do in Your Body

Neutrophils are a type of white blood cell that play a critical role in your immune response. They are the most abundant type of white blood cell and are the first to respond to infections, particularly bacterial ones. They help destroy bacteria and prevent the spread of infection by engulfing and digesting them. Additionally, they release chemicals that attract other immune cells to the site of infection.

When You Might Need This Test

Your healthcare provider may order this test to assess your immune system, especially if you have symptoms like frequent infections, unexplained fever, or signs of inflammation. It can also help diagnose conditions such as infections, autoimmune diseases, or certain blood disorders.

How the Test Works

This test involves drawing a small amount of blood from a vein in your arm. The blood sample is then examined under a microscope to count or qualitatively assess the number of neutrophils. The result helps determine if your neutrophil count is within normal limits or if it is elevated or low, which can indicate various health conditions.

What the Results Mean

Results are typically qualitative or semi-quantitative, meaning they describe whether the neutrophil count is normal, low (neutropenia), or high (neutrophilia). Low neutrophil counts may suggest an increased risk of infections, while high counts might indicate infection, inflammation, or other medical conditions.