What is RDW normal range?

RDW normally ranges from 11.5 – 15%. The range may slightly vary between laboratories. However, a normal RDW doesn’t mean a condition such as anemia is absent. Your doctor will interpret your results in conjunction with your medical history and other test results.

What does low RDW SD mean in a blood test?

A low RDW (below 10.2%) means that the red blood cells vary very little in size. One reason for a low RDW level is macrocytic anemia. Macrocytic anemia is a blood disorder in which not enough red blood cells are produced, but the ones that are present are large. Another cause of a low RDW level is microcytic anemia.

What is Anisopoikilocytosis?

Anisopoikilocytosis is when you have red blood cells that are of different sizes and shapes. The term anisopoikilocytosis is actually made up of two different terms: anisocytosis and poikilocytosis. Anisocytosis means that there are red blood cells of varying sizes on your blood smear.

Is it bad to have a low RDW?

A low RDW is desirable since it is a sign that your RBCs are uniform in size. A low RDW is not a cause for concern. But even if you have a low RDW, still you may have a blood disease.

What is the difference between RDW SD and RDW-CV?

RDW-SD is the arithmetic width of the distribution curve measured at the 20% frequency level. The RDW-CV and RDW-SD are measures of the dispersion of data around the mean. The more spread apart the data, the higher the SD.

Does chemo affect RDW?

After chemotherapy, EF decreased at 3- and 6-month in the high RDW group [baseline, 64.5% [61.9–68.9%]; 3-month, 62.6% [60.4–66.9%]; 6-month, 63.9% [60.0–67.9%]; 12-month, 64.7% [60.8–67.0%], P = 0.04], but no change was observed in low RDW group.

How is RDW-CV calculated?

Mathematically, the RDW-CV is calculated with the following formula: RDW-CV = (Standard deviation of MCV ÷ MCV) × 100.