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Complete blood count - series

Complete blood count

<p><strong>Complete blood count - series - Indication</strong></p><p>The complete blood count (CBC) is test, used to diagnose and monitor numerous diseases. It can reflect problems with fluid volume (such as dehydration) or loss of blood. It can show abnormalities in the production, life span, and destruction of blood cells. It can reflect acute or chronic infection, allergies, and problems with clotting.The CBC test identifies and counts the 7 types of cells found in the blood: red blood cell, neutrophil, eosinophil, basophil, lymphocyte, monocyte, and platelet.</p>

<p><strong>Procedure</strong></p><p>A CBC requires a small blood specimen. In most cases, blood is drawn from a vein, usually from the inside of the elbow or the back of the hand. Sometimes, blood is obtained from a fingerprick.Preparation: The skin should be cleaned with alcohol or iodine before the test. The patient should be seated comfortably or reclining.How the test will feel:When the needle is inserted to draw blood, some people feel moderate pain, while others feel only a prick or stinging sensation. After the blood is drawn, there may be some throbbing.Although the CBC test is very safe, any blood drawing has a very small risk of complication, including:Oozing of blood from one puncture siteFainting or feeling lightheadedHematoma (blood accumulating under the skin)Multiple punctures to locate veinsInfection (a slight risk any time the skin is broken) </p>

<p><strong>Results, part 1</strong></p><p>Results: Normal values vary with altitude and gender.What abnormal results may mean: Low numbers of red blood cells (hematocrit) may indicate anemia, which has many causes, including:Blood lossIron deficienciesDeficiencies of vitamin B12 or folic acidBone marrow failure (for example, from radiation, toxin, fibrosis, tumor)Erythropoietin deficiency (secondary to kidney disease)Hemolysis (RBC destruction)LeukemiaMultiple myelomaOver hydration High numbers of red blood cells may indicate:FluidsDehydrationBurnsEclampsiaErythrocytosisPolycythemia vera Low numbers of white blood cells (leukopenia) may indicate:Bone marrow failure (for example, due to granuloma, tumor, or fibrosis)Exposure to cytotoxic substanceCollagen-vascular diseases (such as lupus erythematosus)Disease of the liver or spleenRadiation exposure High numbers of white blood cells (leukocytosis) may indicate:Infectious diseasesInflammatory disease (such as rheumatoid arthritis or allergy)LeukemiaSevere emotional or physical stressTissue damage (for example, burns)Certain medicines (such as prednisone and other steroids) </p>

<p><strong>Results, part 2</strong></p><p>High numbers of red blood cells may indicate:Cigarette smokingLow oxygen in the blood.Congenital heart disease.Cor pulmonale.Pulmonary fibrosis.Polycythemia vera.Dehydration (such as from severe diarrhea).Emphysema </p>

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