What Does It Mean When Your RDW is High? Insights for Patients and ...
Aug 14, 2024 · What is RDW in a Blood Test? RDW stands for R ed Blood Cell D istribution W idth, a measure of the variation in size or volume of red blood cells (RBCs). It assesses the uniformity of …
RDW Blood Test: What It Is, Procedure & Results - Cleveland Clinic
An RDW blood test measures your red blood cells’ variation in size and volume. Along with other tests, an RDW blood test can help your healthcare provider diagnose anemia.
RDW Blood Test: Understanding High and Low Results - Health
Dec 9, 2025 · A red cell distribution width (RDW) blood test looks at variations in red blood cell size. A high RDW can be a sign of conditions like anemia, diabetes, or liver disease.
Red Cell Distribution Width Blood Test: Uses and Results
Jun 29, 2022 · RDW, which stands for the red cell distribution width, measures variances in the volume and size of your red blood cells. Usually, your red blood cells are around the same size. If RDW is …
Purpose of a Red Cell Distribution Width (RDW) Blood Test
Aug 25, 2025 · The red cell distribution width (RDW) blood test measures how equal your red blood cells are in size. If your RDW blood test is high, it may be a sign of anemia, liver disease, nutrient …
What is RDW in a blood test? What it tells you about your health …
Jul 8, 2025 · RDW is short for Red cell distribution width, a measurement of the variation in size of red blood cells. Red blood cells are about the same size to carry oxygen smoothly throughout the body. …
RDW (Red Cell Distribution Width): MedlinePlus Medical Test
What is a red cell distribution width test? A red cell distribution width (RDW) test measures how much the volume and size of your red blood cells (erythrocytes) varies. Red blood cells are made in your …
What Is a Red Cell Distribution Width (RDW) Test?
RDW measures how the sizes of your red blood cells vary. If there’s a big difference in their sizes, you could have a problem like anemia (low red blood cell count). Recent studies show results from an …
What Is RDW in Blood and What Does a High Level Mean?
Red Cell Distribution Width (RDW) is a measurement included in a standard complete blood count (CBC) test, used to assess overall blood health. RDW specifically measures the variation in the size …
What Does a High RDW Mean in a Blood Test? - Biology Insights
Interpret your high RDW blood test result. Learn what red blood cell size variation signals about underlying health and the necessary next diagnostic steps.