The determination of the number of neutrophils within a complete blood count is accomplished using a mathematical process. This process involves multiplying the total white blood cell count by the percentage of neutrophils reported in the differential count. The result is an indicator of the body’s capacity to combat infection, particularly bacterial infections. For example, if an individual has a total white blood cell count of 5,000 cells/microliter and the differential count indicates 60% neutrophils, the calculated value would be 3,000 neutrophils/microliter.
This calculation provides critical data for clinicians in assessing a patient’s immune status. It aids in the diagnosis and management of various conditions, including infections, inflammatory disorders, and certain cancers. Historically, manual methods were employed to determine the neutrophil percentage, but automated cell counters have largely replaced these techniques, improving accuracy and efficiency. Understanding this value is essential for interpreting laboratory results and guiding appropriate medical interventions.