Absolute Neutrophil Count (ANC) from Complete Blood Count (CBC) with Differential

What Neutrophils Do in Your Body

Neutrophils are a key part of your immune system. They’re the most common type of white blood cell and play a critical role in defending your body against bacterial infections. When you have an infection, your body releases signals to increase neutrophil production, helping you fight off germs. However, too many or too few neutrophils can indicate health problems.

How This Test Works

Your blood sample is analyzed to count the absolute number of neutrophils. This is typically done as part of a complete blood count (CBC), which also includes other blood cell types. The test may be performed using automated blood cell counters or manual differential staining methods.

When You Might Need This Test

Doctors may order this test if you have symptoms like frequent infections, fever, fatigue, or if you’re recovering from surgery, chemotherapy, or a serious illness. It can also be used to monitor conditions like leukemia, autoimmune diseases, or infections.

Possible Results and What They Mean

Results are usually reported as an absolute count (number of neutrophils per microliter of blood). Low neutrophil counts (neutropenia) may suggest immune suppression, while very high counts (neutrophilia) could indicate infection, inflammation, or other conditions.