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An absolute eosinophil count is a blood test that measures the number of white blood cells called eosinophils. Eosinophils become active when you have certain allergic diseases, infections, and other medical conditions.
See also: Blood differential
Alternative NamesEosinophils; Absolute eosinophil count
How the test is performedBlood is drawn from a vein, usually on the inside of the elbow or the back of the hand. The puncture site is cleaned with antiseptic, and an elastic band is placed around the upper arm to apply pressure and restrict blood flow through the vein. This causes veins below the band to fill with blood.
A needle is inserted into the vein, and the blood is collected in an air-tight vial or a syringe. During the procedure, the band is removed to restore blood flow. Once the blood has been collected, the needle is removed, and the puncture site is covered to stop any bleeding.
For an infant or young child, the area is cleansed with antiseptic and punctured with a sharp needle or a lancet. The blood may be collected in a pipette (small glass tube), on a slide, onto a test strip, or into a small container. Cotton or a bandage may be applied to the puncture site if there is any continued bleeding.
In the laboratory, the blood is placed on a microscope slide. A stain added to the sample causes eosinophils to show as orange-red granules. The technician then counts how many eosinophils are present per 100 cells. The percentage of eosinophils is multiplied by the white blood cell count to give the absolute eosinophil count.
How to prepare for the testNo special preparation is necessary for adults.
Certain medicines may cause you to have an increase in eosinophils. Such medicines include:
- Amphetamines (appetite suppressants)
- Certain laxatives containing psyllium
- Certain antibiotics
- Interferon
- Tranquilizers
When the needle is inserted to draw blood, some people may feel moderate pain. Others may feel only a prick or stinging sensation. Afterward, there may be some throbbing.
Veins and arteries vary in size from one patient to another and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.
Why the test is performedYour doctor may order an eosinophil count if the results of another blood test, called a blood differential, are abnormal. This test may also be done if the doctor thinks you may have a specific disease.
This test may help diagnose:
- Acute hypereosinophilic syndrome (a rare but sometimes fatal leukemia-like condition)
- An allergic reaction (can also reveal how severe the reaction is)
- Early stages of Cushing's disease
- Infection by a parasite
Less than 350 cells per microliter (cells/mcL).
Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
What abnormal results meanHigh numbers of eosinophils (eosinophilia) are usually associated with allergic diseases and infections from parasites such as worms. A high eosinophil count may be due to:
A lower-than-normal eosinophil count may be due to:
- Alcohol intoxication
- Over production of certain steroids in the body (such as cortisol)
There is very little risk involved with having your blood taken. Veins and arteries vary in size from one patient to another and from one side of the body to the other. Taking blood from some people may be more difficult than from others.
Other risks associated with having blood drawn are slight but may include:
- Excessive bleeding
- Fainting or feeling light-headed
- Hematoma (blood accumulating under the skin)
- Infection (a slight risk any time the skin is broken)
The eosinophil count usually helps confirm, rather than make, a diagnosis. It can not tell if an increase is caused by allergy or parasite infection.
ReferencesHoffman R, Benz Jr. EJ, Shattil SJ, et al., eds. Hematology: Basic Principles and Practice. 4th ed. Philadelphia, Pa: Churchill Livingston; 2005:768.
McPherson RA and Pincus MR. Henry's Clinical Diagnosis and Management by Laboratory Methods. 21st ed. Philadelphia, Pa: WB Saunders; 2007:474.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoAn absolute eosinophil count is a blood test that measures the number of white blood cells called eosinophils. Eosinophils become active when you have certain allergic diseases, infections, and other medical conditions.
See also: Blood differential
Alternative NamesEosinophils; Absolute eosinophil count
How the test is performedBlood is drawn from a vein, usually on the inside of the elbow or the back of the hand. The puncture site is cleaned with antiseptic, and an elastic band is placed around the upper arm to apply pressure and restrict blood flow through the vein. This causes veins below the band to fill with blood.
A needle is inserted into the vein, and the blood is collected in an air-tight vial or a syringe. During the procedure, the band is removed to restore blood flow. Once the blood has been collected, the needle is removed, and the puncture site is covered to stop any bleeding.
For an infant or young child, the area is cleansed with antiseptic and punctured with a sharp needle or a lancet. The blood may be collected in a pipette (small glass tube), on a slide, onto a test strip, or into a small container. Cotton or a bandage may be applied to the puncture site if there is any continued bleeding.
In the laboratory, the blood is placed on a microscope slide. A stain added to the sample causes eosinophils to show as orange-red granules. The technician then counts how many eosinophils are present per 100 cells. The percentage of eosinophils is multiplied by the white blood cell count to give the absolute eosinophil count.
How to prepare for the testNo special preparation is necessary for adults.
Certain medicines may cause you to have an increase in eosinophils. Such medicines include:
- Amphetamines (appetite suppressants)
- Certain laxatives containing psyllium
- Certain antibiotics
- Interferon
- Tranquilizers
When the needle is inserted to draw blood, some people may feel moderate pain. Others may feel only a prick or stinging sensation. Afterward, there may be some throbbing.
Veins and arteries vary in size from one patient to another and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.
Why the test is performedYour doctor may order an eosinophil count if the results of another blood test, called a blood differential, are abnormal. This test may also be done if the doctor thinks you may have a specific disease.
This test may help diagnose:
- Acute hypereosinophilic syndrome (a rare but sometimes fatal leukemia-like condition)
- An allergic reaction (can also reveal how severe the reaction is)
- Early stages of Cushing's disease
- Infection by a parasite
Less than 350 cells per microliter (cells/mcL).
Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
The example above shows the common measurements for results for these tests. Some laboratories use different measurements or may test different specimens.
What abnormal results meanHigh numbers of eosinophils (eosinophilia) are usually associated with allergic diseases and infections from parasites such as worms. A high eosinophil count may be due to:
A lower-than-normal eosinophil count may be due to:
- Alcohol intoxication
- Over production of certain steroids in the body (such as cortisol)
There is very little risk involved with having your blood taken. Veins and arteries vary in size from one patient to another and from one side of the body to the other. Taking blood from some people may be more difficult than from others.
Other risks associated with having blood drawn are slight but may include:
- Excessive bleeding
- Fainting or feeling light-headed
- Hematoma (blood accumulating under the skin)
- Infection (a slight risk any time the skin is broken)
The eosinophil count usually helps confirm, rather than make, a diagnosis. It can not tell if an increase is caused by allergy or parasite infection.
ReferencesHoffman R, Benz Jr. EJ, Shattil SJ, et al., eds. Hematology: Basic Principles and Practice. 4th ed. Philadelphia, Pa: Churchill Livingston; 2005:768.
McPherson RA and Pincus MR. Henry's Clinical Diagnosis and Management by Laboratory Methods. 21st ed. Philadelphia, Pa: WB Saunders; 2007:474.
Reviewed ByReview Date: 01/24/2011
Todd Gersten, M.D., Hematology/Oncology, Palm Beach Cancer Institute, West Palm Beach, FL. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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What is abseos in a blood report?
Absolute eosinophil count.
What causes High Absolute eosinophil count?
mostly allergic reactions
What does a high eos absolute blood test result mean?
The absolute eosinophil count measures the white blood cell count. When a person is infected with a bacterial strain, flu or disease the white cell count can increase or decrease. The test determines if the eosinophil are active or dormant.
What is Abs Eos blood test?
EOS ABS is a test that measures the absolute number of eosinophil's present in the blood. Eosinophil's are a form of white blood cells that perform specialized functions for the immune system.
What causes high absolute eosinophil?
mostly allergic reactions
Number rises during parasite infections?
Eosinophil count
How is the differential count affected in allergic conditions?
High Eosinophil Count is usually from affected allergic condition
What happens when a person has a high eosinophil count?
An eosinophil count is a measure of the number of a specific type of white blood cell. A high count can mean an acute allergic reaction to a substance, early stages of Cushing disease, parasitical infection, or rarely, acute hypereosinophilic syndrome. The eosinophil count can be artificially raised by taking psyllium based laxatives, certain antibiotics, amphetamines, tranquilizers or interferon.
What can cause high eosinophil and monocyte count?
usually if you have some sort of an allergey to something
What does EOS percent mean in blood work?
The EOS percent is the percent of white blood cells in the blood. The eosinophil count is used when testing for Allergies.
What does a zero eosinophil count indicate?
A zero eosinophil count indicates a very low level or absence of eosinophils in the blood. Eosinophils are a type of white blood cell involved in the immune response against parasites and allergies. This may be seen in certain medical conditions or as a result of certain medications.
What causes high eosinophil count?
There are many different conditions and diseases that can cause a high eosinophil's. Some of these things are Asthma, trichinosis, ovarian cancer, hay fever, Crohn's disease, eczema, and Hodgkin's disease.
