Neutrophil Count in Blood (Qualitative Manual Differential)

Why Is This Test Done?

Your healthcare provider may order this test to diagnose or monitor conditions like infections (such as bacterial infections), inflammatory diseases, or certain blood disorders. It can also help evaluate how well your immune system is functioning or if you’re at risk for complications from infections.

How Is the Test Performed?

A small blood sample is taken from a vein, usually in your arm. The sample is then examined under a microscope by a trained technician to count and identify different types of white blood cells, including neutrophils, manually.

What Does the Result Mean?

Results are qualitative (descriptive rather than numerical), meaning they indicate whether the neutrophil count is elevated, low, or within expected ranges. For example, a higher-than-normal count may suggest infection or inflammation, while a lower count could indicate immune suppression or other conditions.

Common Conditions Monitored

This test is often used alongside other blood tests to diagnose or track conditions such as sepsis, chronic infections, autoimmune diseases, or neutropenia (a low neutrophil count). It helps guide treatment decisions, such as adjusting antibiotics or managing immune-related therapies.