This laboratory test is performed on a blood sample to measure the levels of eosinophils in the blood. Eosinophils are disease-combating white blood cells that play a very important role in immune response. Eosinophils increase when there are certain infections, allergies, or other health conditions.
Why is this test performed?
This test is performed:
To help the doctor in diagnosing an infection in the body
To help the doctor in diagnosing an allergic reaction and its severity
To help the doctor in diagnosing an early Cushing’s disease
To help the doctor in diagnosing an acute hypereosinophilic syndrome
It also helps in diagnosing the following conditions:
Sample collection: Blood sample is collected from a vein by a healthcare professional and stored in a sterilized tube
The sample is sent to laboratory for further analysis.
Which medicines might increase my eosinophil count?
How to prepare for this test?
No special preparations are required for this test. Inform your doctor about the use of blood thinning medicines such as warfarin. Wear a short-sleeved shirt to aid the collection of sample.
What are the reasons for sample rejection?
Very small sample
Dilution or contamination
What are the risks of this test?
Collecting blood from a vein is a very easy procedure and pose only minimum risk, including:
What are the symptoms of allergy?
Following symptoms may suggest an allergic reaction:
Red itchy eyes
Normal range: Less than 500 cells per microliter.
Interpretation of test results:
Causes of High Eosinophil count:
Adrenal gland deficiency.
Causes of Low Eosinophil count:
Steroid (cortisol) imbalance.
You should get tested if you have the sign and symptoms of the following conditions: