Mucus moistens and cleans the nasal membranes, humidifies air, traps and clears inhaled foreign matter, and fights infection. Although it is normally swallowed unconsciously, the feeling of it accumulating in the throat or dripping from the back of your nose is called post-nasal drip.
RDW refers to the variation in size if your red blood cells. A â¦ low RDW means that the cells are all roughly the same size. A high RDW means there isa high variation in the sizes of the cells and usually means a deficiency of iron and/or B12.
In combination with MCV, RDW is useful in diagnosing conditions such as anaemia of chronic disease, sickle cell beta thalassaemia, aplastic anemia and chronic liver disease to name but a few. This is discussed in more detail below. High RDW, Low MCV: Iron deficiency anemia, sickle cell beta thalassaemia. Normal RDW, Low MCV: