Red Cell Distribution Width blood test
1 of 1nouna measure of the variation in size of red blood cells, which can help diagnose certain types of anemia and other blood disorders
The Red Cell Distribution Width blood test (RDW blood test) measures the difference in size of red blood cells in a blood sample. This test helps evaluate the overall health of red blood cells and can be used to diagnose and monitor different types of anemia and other blood disorders. A high RDW suggests that the red blood cells are very different in size, which may be a sign of anemia or other conditions. A normal RDW means that the red blood cells are similar in size. And a low RDW, may be a sign that the red blood cells are unusually similar in size, which can be seen in certain types of anemia or other health conditions.