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 crucial role in responding to bacterial infections. When your body detects bacteria or other harmful substances, neutrophils rush to the site to help destroy them. Your test result gives your healthcare provider a snapshot of your neutrophil levels, which can help identify infections, inflammation, or other health concerns.

Why Might You Need This Test?

Doctors may order a neutrophil count to diagnose or monitor conditions such as infections (like pneumonia or urinary tract infections), certain cancers (like leukemia), autoimmune diseases, or to check how well your immune system is functioning after treatments like chemotherapy. It can also help assess overall health, especially in people with chronic illnesses.

What to Expect Before the Test

This test is usually done by taking a small sample of blood from a vein in your arm. You may feel a slight pinch, but it’s quick and painless. No special preparation is needed unless your doctor instructs otherwise. If you’re on blood-thinning medications, let your doctor know before the test.

What the Results Mean

Results are typically reported as a number of neutrophils per microliter (µL) of blood. While reference ranges can vary slightly by lab, very high or very low levels may signal potential issues. Your doctor will interpret the results in the context of your overall health and symptoms.