Final answer:
The information about WBC counts indicating a potential acute infection and the normal percentage ranges for eosinophils and neutrophils is a. true, with the normal human WBC count ranging from 4,500 to 11,000 per microliter. Differences in normal ESR rates for men and women are also correctly stated.
Step-by-step explanation:
The statement regarding white blood cell (WBC) counts and the percentages of different types of WBCs such as eosinophils and neutrophils is partially true. Normal WBC counts in humans are typically between 4,500 and 11,000 WBCs per microliter of blood.
Therefore, a WBC count of 18,000/mm3 does indeed suggest an acute infection, as it is significantly higher than the normal range. When it comes to eosinophil levels, the normal range is from 1% to 4%, which aligns with the given statement.
Similarly, normal neutrophil levels range from about 55% to 70% of the total WBC count. However, an important point to mention is that these true or false values can vary based on age, gender, and even methodology of measurement.
An increased erythrocyte sedimentation rate (ESR) is often associated with inflammation, and normal ESR values can differ based on gender; the stated rates of 15 mm/hr for men and 20 mm/hr for women are considered normal.