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Eosinophil count - absolute
An absolute eosinophil count is a blood test that measures the number of one type of white blood cells called eosinophils. Eosinophils become active when you have certain allergic diseases, infections, and other medical conditions.
Normal Results
Normal eosinophil count is less than 500 cells per microliter (cells/mcL).
Normal value ranges may vary slightly among different laboratories. Talk to your provider about the meaning of your specific test results.
The example above shows the common measurements for results of these tests. Some laboratories use different measurements or may test different specimens.
What Abnormal Results Mean
A high number of eosinophils (eosinophilia) are often linked to a variety of disorders. A high eosinophil count may be due to:
- Adrenal gland deficiency
- Allergic disease, including hay fever
- Asthma
- Autoimmune diseases
- Eczema
- Fungal infections
- Hypereosinophilic syndrome
- Leukemia and other blood disorders
- Lymphoma
- Parasite infection, such as worms
A lower-than-normal eosinophil count may be due to:
Alcohol intoxication
Overproduction of certain steroids in the body (such as cortisol)
Alternative Names
Eosinophils; Absolute eosinophil count
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