What percentage of white blood cells do "segs" represent?

"Segs," or segmented neutrophils, are a type of white blood cell that play a crucial role in the immune response by fighting off infections and responding to inflammation. In a typical complete blood count (CBC), segmented neutrophils generally account for approximately 45% to 75% of the total white blood cell (WBC) count.

The correct answer, which indicates that segs represent around 60% of white blood cells, aligns well with the normal reference range commonly observed in healthy individuals. This percentage reflects their significant presence in the bloodstream as they are one of the first responders to microbial infections.

The other options do not accurately reflect the typical percentage of segmented neutrophils found in a healthy adult's blood. Values like 4% or 10% would indicate an unusual low level of neutrophils, which could suggest a range of hematological conditions or an inadequate immune response. Similarly, 50% is lower than the expected range, making the 60% the most representative value for segmented neutrophils in a normal laboratory setting.