The eosinophil count is a test that can determine the number of eosinophils in the body. These marrows are in charge of replenishing all white blood cells in the body. Each white blood cell can be found in the bloodstream for several hours to several days.Įosinophils are a type of WBC that is found in various tissues throughout the body. It constantly replaces the supply of white blood cells. All five types of white blood cells are produced by our bone marrow. An increase in eosinophils may indicate that your body is fighting an infection or an allergic reaction.

Eosinophils are a type of white blood cell.