Neutrophil count (absolute)

What Is a Neutrophil Count?

Neutrophils are a key part of your immune system. They’re the most common type of white blood cell and play a major role in defending your body against bacterial infections. The test measures how many neutrophils are present in your blood sample, usually expressed as a count per microliter (cells/µL).

Why Might You Need This Test?

Your doctor may order this test to check for infections, inflammation, or other conditions that could affect your neutrophil count. For example, it might be used if you have symptoms like frequent infections, fever, or signs of an immune system issue. It can also help monitor treatments for conditions like leukemia or other blood disorders.

What to Expect Before the Test

This test is typically done by drawing blood from a vein in your arm. No special preparation is usually needed, but let your doctor know if you’re taking blood-thinning medications or have any bleeding disorders.

What the Results Mean

Results are usually reported as a specific count (e.g., cells per microliter). A lower than normal count may indicate an infection, immune disorder, or side effect of certain medications. A higher than normal count might suggest inflammation, infection, or other health concerns. Your doctor will interpret the results in the context of your overall health and symptoms.