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What do a high eosinophil count and CO2 level in blood tests mean?

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High eosinophil count in the blood may indicate an allergy or an illness caused by a parasite, while high CO2 levels may be due to kidney failure, vomiting or the overuse of diuretics. These two values are part of a biochemical profile that are derived from blood test. Blood test or blood work is an essential diagnostic tool that can provide important information about a patient's well-being.

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Full Answer

Eosinophil is a white blood cell, and it is produced by the body to defend itself against allergic reactions and parasites. The normal levels of eosinophil in adults is between 0 to 5 percent, according to the University of North Carolina. The optimal range of eosinophil in the body is 2.5 percent. When eosinophil is produced by the body, it can stay in the blood for about 8 to 12 hours and can stay in the tissue for 8 to 12 days.

CO2 is simply carbon dioxide, and a blood test is used to measure its levels in the liquid portion of the blood called serum. The normal levels in the body are 23 to 29 milliequivalents per liter. Normal values, however, may vary among laboratories, according to the National Institutes of Health. High CO2 levels can also be a sign of certain medical conditions such as Cushing syndrome, hyperaldosteronism and breathing disorders.

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