Eosinophils, Absolute
The white blood cell (WBC) differential is a separate test from the complete blood cell count (CBC), but these tests are frequently ordered together during a routine medical examination. The WBC differential reports the five main WBC types (neutrophils, lymphocytes, monocytes, eosinophils, and basophils) as a direct count as well as a relative percentage. By understanding which WBC type is abnormal, it helps us reach a conclusion about why the WBC is elevated on the CBC. It is also used to monitor certain diseases such as infections (mononucleosis, HIV, tuberculosis), inflammation, asthma, autoimmune disorders, and leukemia.
Resources: LabCorp: Blood Smear