American Association of Critical-Care Nurses (AACN) Certification Practice Test

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What is the normal range percentage for neutrophils in a blood test?

The correct answer is: 60%

Neutrophils are a type of white blood cell critical for the immune response, particularly in fighting off infections. In a standard complete blood count (CBC), the normal range for neutrophils typically falls between approximately 55% and 70% of the total white blood cells (WBCs). Therefore, a percentage around 60% is considered within the normal range. This percentage indicates adequate bone marrow function and normal immune activity. A count that significantly deviates from this range may suggest various health issues, such as infections, inflammation, or bone marrow disorders. Understanding the normal ranges for neutrophils is essential for practitioners to assess patient health accurately and make informed decisions regarding diagnosis and treatment.