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According to Medscape, RDW stands for red cell distribution width; it is a measure of the variation of red blood cell size or volume. Higher RDW means a larger variation in the sizes of red blood cells found in a sample.


An RDW test is a red cell distribution width test, which is one of the parameters measured in blood tests, states Medscape. Higher RDW results mean that the patient's red blood cells have a greater variation in size or volume.


"RDW-CV" and "RDW-SD" are a measurement of the size of red blood cells, according to Med-Health.net. RDW-SD is an actual measurement, while RDW-CV involves some calculations using the RDW-SD deviation.


On blood test results, "RDW" stands for red cell distribution width, which shows the variation in the size of red blood cells, according to the Mayo Medical Laboratories. This measurement is often used to help diagnose specific types of anemia.


Each year, when you go for your physical, your doctor will likely order several blood tests, one of which is called a complete blood count (CBC). This one test gives the doctor information about many different types of values, regarding everything from your cholesterol ...


"RDW" stands for red cell distribution width. RDW is a measurement of the volume and size of the red blood cells in the body. Although the normal RDW measurement is 10.2 to 14.5 percent, that range can vary slightly depending on the machine used for testing.


High RDW, or red cell distribution width, is sometimes caused by liver disease, according to Medscape.com. In this case, the mean corpuscular volume, or MCV, is also elevated. These test results are possible indicators of hemolytic anemia, a condition where red blood ce...