What percentage range does eosinophils typically occupy in a blood sample?

Eosinophils typically account for approximately 1-4% of the total white blood cells in a healthy individual's blood sample. They play a crucial role in the immune response, particularly in combating parasitic infections and contributing to allergic reactions.

This percentage range is considered normal in adults and reflects a stable population necessary for maintaining proper immune function. Eosinophils can rise in response to certain conditions, such as allergies and infections, but in a typical blood test, the concentration remains within that 1-4% range. Higher or lower percentages may indicate specific health issues, necessitating further clinical evaluation.

The other options either significantly exceed or do not meet this established norm for eosinophil levels in the bloodstream. Therefore, the 1-4% range accurately represents the expected proportion of eosinophils in a healthy individual.