Results can indicate the presence of anemia and help to pinpoint the underlying cause. Microcytic anemia occurs when the body does not get enough oxygen and cannot provide enough energy to all organs and tissues, causing pale skin and….
When blood becomes too thick, it can lead to clots and other complications. Here, learn more about why it happens and the effects. Nutritional-deficiency anemia happens when the body does not get enough iron or a few other nutrients from the diet.
Learn more, including how to…. Mean corpuscular hemoglobin or MCH levels refer to the amount of hemoglobin that is present in a red blood cell. Hemoglobin is a protein that carries….
Iron is a vital mineral in the body, central to transporting oxygen around the body in the hemoglobin. A shortage of iron can cause health problems…. What does it mean if your RDW is high?
Medically reviewed by Daniel Murrell, M. What is the RDW blood test? Preparing for the RDW test. Blood cell disorders impair the formation and function of red blood cells, white blood cells, or platelets.
Learn about a blood smear, including why it's done, what to expect during it, and how to interpret its results. Learn the ins and outs of MRI vs. X-ray imaging tests, including the pros and cons of each test, how they compare to CT scans, how much they cost, and…. Paracentesis is a procedure to remove excess fluid from the abdominal cavity. This fluid buildup is called ascites.
Learn about preparation, recovery…. Learn more. An abdominal film is an X-ray of the abdomen. This type of X-ray can be used to diagnose many conditions. Learn more here. Health Conditions Discover Plan Connect. Medically reviewed by Andrew Gonzalez, M. However, with certain diseases, you may still have a normal RDW. Why is the RDW test done? How do you prepare for the test?
If the RDW value is outside the normal range, it can be a sign of a problem with body function, which may affect the flow of oxygen from the lungs to parts of your body. Even if you have normal RDW, you may have certain diseases. Since a person with normal RDW can still have an underlying condition, doctors may take into consideration the results of other blood tests as well.
An RDW blood test is typically used to diagnose anaemia and different conditions such as:. Before you undergo an RDW blood test, you will be asked to fast by your doctor for a few hours, based on the other tests that you need to take. Before the test, your doctor may give you special instructions. The test lasts typically for less than five minutes. The test is simple and quick. Your healthcare provider will draw blood from a vein using a small needle.
When the needle goes in, you may feel a stinging sensation. In addition to the conditions mentioned above, some argue that RDW could be a measure of general well-being. For now, it's uncertain the value this test will have in many conditions but it's noteworthy that simple tests such as these—that can easily be overlooked—may provide important information to be heeded.
In a blood test, the red cell distribution width RDW is the range of volume and size that blood cells can reach. It is used to help diagnose certain conditions like anemia, thalassemia , heart disease , diabetes , liver disease, colorectal cancer , and more.
A high RDW has been associated with some types of anemia, including iron deficiency anemia , vitamin B12 and folate deficiency, mixed anemias, sickle cell disease , myelofibrosis , and cold agglutinin disease. It has also been linked to certain conditions unrelated to blood, such as sleep apnea and lupus. High RDW is not a guarantee these conditions are present. Some people with anemia may bruise easily. Other symptoms of anemia can include dizziness, headache, heightened thirst, irritability, sore tongue, lower leg cramping during exercise, tiredness, pale skin, and weakness.
Sign up for our Health Tip of the Day newsletter, and receive daily tips that will help you live your healthiest life. Reviewed July 31, Dugdale, A. Journal of Laboratory and Precision Medicine.
McPherson R. St Louis, MO: Elsevier; Patel, K. Archives of Internal Medicine. Skjelbakken, T. Journal of the American Heart Association. Your Privacy Rights. To change or withdraw your consent choices for VerywellHealth. At any time, you can update your settings through the "EU Privacy" link at the bottom of any page. These choices will be signaled globally to our partners and will not affect browsing data. We and our partners process data to: Actively scan device characteristics for identification.
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