Eosinophil count - absolute

What is Eosinophil count - absolute?

Eosinophil count - absolute is a laboratory test that measures the number of eosinophils in a sample of blood. Eosinophils are a type of white blood cells found in the body. They play a vital role in fighting infections and inflammation, such as allergies.


A sample of blood is drawn from a vein in the arm in the same manner used for other blood tests. The sample is then sent to a laboratory, where it is analyzed to determine the number of eosinophils present.


Eosinophil count - absolute measures the number of eosinophils in the blood sample. Eosinophils are typically measured as a percentage of white blood cells or as absolute numbers.


The procedure of having blood taken is associated with very few risks. These can include pain, discomfort, swelling and bruising near where the needle was used.

Why it is done?

This test is done to assess the number of eosinophils in the blood. High eosinophil counts may indicate a number of diseases or conditions, including allergies, parasitic infections and certain types of cancer. Low eosinophil counts may be seen in certain medical conditions, such as malnutrition or chronic infection.

When Should It Be Done?

The need for an eosinophil count - absolute test may be determined by your doctor based on your medical history and physical exam. It may be recommended if your doctor suspects a particular disease or condition, such as allergies, asthma, parasitic infections or cancer.