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A high RDW may be a sign of anemia or a related condition. Your healthcare provider will need to look at other tests to be sure. Often, they’ll look at the results of an RDW (variation in red blood cell size) alongside the results of the MCV (average red blood cell size) to assess the health of your red blood cells.
Reasons for RDW test or the red blood indices include as part of a routine physical exam, a family history of blood disorders, or signs of anemia. This article looks at the RDW blood test, what a typical RDW level is, and what it means if your RDW is too low or too high.
High RDW is most common when a patient is diagnosed with diseases that directly affect the red blood cells. Chronic diseases like AIDS or HIV. What Causes High RDW? While there can be many reasons for the occurrence of high RDW, the common reason is the low oxygen levels in the patient’s body.
Anything above the reference range of values is considered high (and is usually marked on the report as "High" or "H"). Anything below the reference range of values is considered low (and is usually marked on the report as "Low" or "L"). Anything between the high and low values is normal.
High and normal RDW levels in a blood test can help to tell a lot about your health. Taking RDW levels and comparing them with other red blood cell indices can allow doctors to check for anemia, vitamin B12 deficiency, low levels of iron, and other blood disorders.
If your RDW blood test is high, it means there is a greater variation in the size of your red blood cells. This is called anisocytosis. A high RDW may be a sign of a nutrient deficiency. This article covers why RDW blood tests are done, how the results are interpreted, and what to expect if you are having an RDW blood test.
High RDW values may mean you have a nutrient deficiency, anemia, or other underlying condition. Why is the RDW test done? The RDW test is used to help diagnose types of anemia and other...
A high RDW means that the size of your red blood cells varies more than it should. The sizes will be more spread out on the histogram. This may be a sign of a medical condition. Other names: RDW-SD (standard deviation) test, Erythrocyte Distribution Width. What is it used for?
A red cell distribution width (RDW) test is a type of blood test that indicates variations in the size of a person’s red blood cells. It can confirm an anemia diagnosis and help determine its...
A high RDW indicates iron-deficiency anemia while a normal RDW indicates thalassemia. A high RDW is associated with an increased in mortality rate as it causes a poor prognosis in some types of cardiac-related diseases.