What test should conduct to measure the number eosophils in blood sample?

The most common test used to measure the number of eosinophils in a blood sample is a complete blood count (CBC) with differential. This test measures the number of all the different types of white blood cells in the blood, including eosinophils. A CBC is typically performed as part of a routine physical examination or when someone is experiencing symptoms of an infection or other medical condition.

Blood film: Stained blood slide can give more detailed information about the cell morphology, presence of abnormal cells and parasites.

Eosinophil count: This test specifically measures the number of eosinophils in a blood sample. It can be used to diagnose and monitor conditions associated with elevated eosinophil levels, such as:

Allergic reactions

Parasitic infections

Certain types of cancer

Bone marrow disorders

Other tests that may be used to measure eosinophils include:

Eosinophil peroxidase test: This test measures the amount of eosinophil peroxidase in the blood. Eosinophil peroxidase is an enzyme that is released by eosinophils when they are activated. Elevated levels of eosinophil peroxidase can indicate the presence of an allergic reaction or parasitic infection.

Flow cytometry: This test can be used to measure the number and characteristics of eosinophils in the blood. Flow cytometry can also be used to identify specific types of eosinophils, such as those that are activated or those that are expressing certain markers.

The choice of which test to conduct to measure the number of eosinophils in a blood sample will depend on the specific clinical situation.