An ear infection is an inflammation of the middle ear, usually caused by bacteria, that occurs when fluid builds up behind the eardrum. Anyone can get an ear infection, but children get them more often than adults. Five out of six children will have at least one ear infection by their third birthday.
Red blood cell distribution width is a way for scientists to measure red blood cell volume and size. When red blood cells are larger than normal, that could indicate a problem. The reference range for RDW is as follows: RDW-SD: 29-46 fL.
What does RDW mean on blood test results? A: 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.