why is rdw low in blood test?
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If you receive a normal RDW with a low MCV, you may have an anemia resulting from a chronic disease, such as that caused by chronic kidney disease. If your RDW result is normal but you have a high MCV, you may have aplastic anemia.
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A low red blood cell count is called anemia. If you have a low red blood cell count, you may: Feel a little tired or very tired.
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A red cell distribution width (RDW) test is a measurement of the range in the volume and size of your red blood cells (erythrocytes). Red blood cells move oxygen from your lungs to every cell in your body. Your cells need oxygen to grow, reproduce, and stay healthy.
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This can be due to a deficiency of folate or vitamin B-12. Additionally, you may have microcytic anemia, which is deficiency of normal red blood cells, and your red blood cells will be smaller than normal. Iron deficiency anemia is a common cause of microcytic anemia.
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Why it's done A lower than normal hematocrit can indicate: An insufficient supply of healthy red blood cells (anemia) A large number of white blood cells due to long-term illness, infection or a white blood cell disorder such as leukemia or lymphoma. Vitamin or mineral deficiencies.
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Diseases and conditions that cause your body to produce fewer red blood cells than normal include: Aplastic anemia. Cancer. Certain medications, such as antiretroviral drugs for HIV infection and chemotherapy drugs for cancer and other conditions.
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RHR is lowered as the heart muscle becomes stronger and gets better at pumping out more blood per heartbeat. The body needs fewer heartbeats to pump the same amount of blood. If your heart muscle is weak, it needs to beat more times to pump the same amount of blood.
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If a ferritin test reveals that your blood ferritin level is lower than normal, it indicates your body's iron stores are low and you have iron deficiency. As a result, you could be anemic.
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A low RBC count may indicate anaemia, bleeding, kidney disease, bone marrow failure (for instance, from radiation or a tumour), malnutrition, or other causes. A low count may also indicate nutritional deficiencies of iron, folate and vitamin B12.
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A low hemoglobin count can be associated with a disease or condition that causes your body to have too few red blood cells. This can occur if: Your body produces fewer red blood cells than usual. Your body destroys red blood cells faster than they can be produced.
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['An insufficient supply of healthy red blood cells (anemia)', 'A large number of white blood cells due to long-term illness, infection or a white blood cell disorder such as leukemia or lymphoma.', 'Vitamin or mineral deficiencies.', 'Recent or long-term blood loss.']
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Large amounts of vitamin C (ascorbic acid) may lower LDH levels. Alcohol, anesthetics, aspirin, narcotics, and procainamide may raise LDH levels. Strenuous exercise may also raise LDH levels. Ask your doctor about any medications you should avoid before the test.
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If you have a low red blood cell count, you may: Feel a little tired or very tired. Feel less alert or have trouble concentrating. Have a loss of appetite or lose weight.
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['Iron: Iron deficiency commonly causes low RBC production. ... ', 'Vitamin C: This vitamin may help your body better absorb iron. ... ', 'Copper: There may also be a link between low RBC production and copper deficiency. ... ', 'Vitamin A (retinol): Women need 700 micrograms (mcg) per day.']
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The red cell distribution width (RDW) test measures variation in red blood cell size or red blood cell volume as a part of a complete blood count (CBC), and it is used along with other RBC indices, especially mean corpuscular volume (MCV), to help determine the causes of anemia.
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Decreased red blood cell production may be caused by primary bone marrow diseases (such as aplastic anemia or hematopoietic malignancy), kidney failure, toxins, or drugs such as phenylbutazone. Longterm debilitating diseases may also be associated with mild anemia.
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Low levels of ferritin lead to iron-deficiency anemia. This means you have too few red blood cells. Iron deficiency can come from a poor diet or blood loss. Or your body may have trouble absorbing iron from food.