Eosinophils are white blood cells that help fight parasitic infections and play a role in allergic reactions and inflammation.
Category: Complete Blood Count
Also known as: eosinophils, eos, eosinophil %
Reference range: 1–4 % (Source: ABIM)
Standard unit: %
High values may indicate
High eosinophils (eosinophilia) may indicate allergies, asthma, parasitic infections, drug reactions, or eosinophilic disorders.
Low values may indicate
Low eosinophils are generally normal. Very low levels may occur with Cushing's syndrome or acute stress.
Source: MedlinePlus, U.S. National Library of Medicine
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