RDW - red cell anisocytosis index, it is calculated as the coefficient of variation of the average volume of red blood cells (normal 11.5 - 14.5%). RDW describes the fluctuations of red blood cells and detected by the device much more accurately than by visual viewing a blood smear. A number of errors accompany score anisocytosis under the microscope. After drying of red blood cells in a smear their diameter is reduced by 10-20% in thick smears, he is less than subtle. Completely get rid of the artifacts can only automated counting of liquid blood, in which stability is, preserved cells. 

RDW is an important additional criterion for the diagnosis and follow-up results for patients with anemia. 

Consider the diagnostic value of this parameter for monitoring the most common type of anemia - iron deficiency anemia (IDA). Hematological parameters depend strongly on the stage of IDA. Thus, in the early stages of this type of anemia red blood cells is normal, and hemoglobin content can be at the lower limit of normal or reduced, reflecting the proliferative activity of normal bone marrow. Erythrocyte histogram is broadened somewhat and begins to shift to the left, RDW is increased. 

As violations hemoglobin recovering a reduction in MCV, MCH, ICSU, an increase in RDW. Erythrocyte histogram is considerably broadened and significantly shifted to the left. 

The treatment of iron deficiency anemia with iron results in the normalization of hemoglobin concentration, MCV, MCH, ICSU. 

In this case, due to appear in the blood of normal population and the young forms RDW continues to increase, the base of the erythrocyte histogram shifted to the right, and the curve itself has two peaks, one of which is located in micro erythrocytes, and another - in the zone macro erythrocytes. 

Gradually, the peaks in the red cell histogram are erased, the base shrinks and its histogram takes the normal form. Note that the last hematological parameter, which is normalized upon successful treatment of anemia, is the RDW. Changes in hematological parameters are correlated with the level of the main indicators of iron metabolism (serum iron content, ferritin, total iron binding capacity). 

In addition to iron-deficiency anemia, erythrocyte histogram with two peaks of red blood cells between 50 and 140 vials, indicating the presence of a heterogeneous population of cells that may occur after blood transfusions. 

RDW blood test high  - According to some foreign authors in several cases of iron deficiency anemia RDW is higher than normal earlier than changing the other parameters (MCV and hemoglobin). Invited to an isolated increase in RDW regarded as an early prognostic sign of iron deficiency (DD Bess man, 1989; Win Trobe MM, 1993). In addition, this indicator can assist in the differential diagnosis of microcytic anemia. Thus, patients with low b-thalassemia, the low level of MCV, RDW index is usually normal, whereas in iron deficiency MCV - low and RDW - high. 

The use of modern hematology analyzers to quickly and with greater accuracy than with chiropractic methods to assess the state of the hematopoietic system, determine the direction further research, assess the dynamics of changes of red blood cells in the process of therapy.

Rdw is referred to as red blood cell distribution width. This is used for calculation number of RBC's that are present in your blood sample. You should visit your doctor and check your RBC count. If the result of your rdw blood test high, then you are having deficiency of iron in your body and you are also suffering with anemia. According to a report, there are more than 300 types of anemia. These types can be broken into various sub groups which relates to loss of blood and your RBC's can demise too. You cannot discover about your rdw until you have performed yours MCV. MCV is the value of your corpuscles. You will not be able to discover about the disorders of hematology and anemia disorders until MCV test is also performed. Both rdw and MCV test are necessary to check your blood count. If the level of your MCV is low and that too in combination with RDW, then it is an indication of deficiency of iron in your body. If yours RDW as well as MCV comes out to be normal then you are suffering with the chronic diseases and other disorders. If your MCV and rdw blood test high then you are having the deficiency of vitamin B 12 in your body. According to various medical institutions and doctors, when the level of MCV in your body is high and rdw test is normal, then you are suffering with leukemia. If your test results in high levels of MCV as well as in RDW then you are having deficiency of folate. If the value of your RDW stands between 10 and 14 percent, then it is a normal rate. These values are of great importance to you as these values can determine rate of mortality. It can also determine cancer diseases as well as cardiovascular disorders and diseases.

If your rdw blood test high, then you should be very careful and start taking some precautions too. Your health is at risk and you should be careful about the meals that you are taking. If your doctor suggests that you are having the deficiency of iron in your body, then you should start taking all those meals which are full of iron. You can take all green vegetables and avoid eating restaurant foods. And, make sure that you do not eat contaminated food. This can risk your health as well as life to a very higher level.