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Normal neutrophil count

Dec 29, 2022 Source: Cainiu Health
Dr. Li Man
Introduction
The normal range is (3–9) × 10⁸/L, accounting for approximately 46%–77% of the total leukocyte count. Neutrophils are one type of white blood cell. Clinically, an increased neutrophil count usually indicates acute or suppurative infection. A decreased count may suggest conditions such as typhoid fever, paratyphoid fever, measles, or certain blood disorders, including aplastic anemia and granulocytopenia.

In daily life, many people like to go to the hospital regularly for check-ups to assess whether their bodies are functioning normally. During these tests, neutrophil levels often appear on the report. So, what exactly is the normal range for neutrophils?

Normal Range for Neutrophils

The normal value is (3–9) × 10⁸/L, accounting for approximately 46%–77% of the total white blood cell count. Neutrophils are one type of white blood cell. Clinically, an increased neutrophil count usually indicates acute or purulent infections. A decreased count may suggest conditions such as typhoid fever, paratyphoid fever, measles, or certain blood disorders like aplastic anemia and neutropenia.

Neutrophil percentage is considered elevated when it exceeds 75%. Common causes of high neutrophil levels include suppurative infections—especially those caused by Staphylococcus aureus, Streptococcus pneumoniae, and hemolytic streptococci. Neutrophils serve as the body's first line of defense in the immune system. Once an infection occurs, large numbers of neutrophils are released from the bone marrow into the bloodstream to exert immune functions. Secondly, physiological conditions such as exposure to severe cold, intense exercise, or strenuous physical labor can also cause neutrophils stored in blood vessel walls to be released into peripheral blood, resulting in elevated neutrophil percentages shown in routine blood tests.

Everyone should pay attention to personal health maintenance and strengthen their immunity. If any abnormalities are detected, please seek timely medical examination and treatment. We hope this information has been helpful to you. Wishing you good health and a happy life!


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