Understand your values of RDW

What is RDW and Its Measure Units

Red Cell Distribution Width (RDW) is an important blood test parameter that provides insight into the variation in the size of your red blood cells (erythrocytes). When you undergo a complete blood count (CBC) test, RDW is one of the components assessed alongside hemoglobin, hematocrit, and other factors. The measurement of RDW is typically expressed as a percentage (%) or as a coefficient of variation. This measurement helps healthcare providers understand the degree of red cell size variation in your bloodstream, which can be crucial for diagnosing various health conditions.

Understanding your RDW levels can be an important part of routine healthcare, as it aids in evaluating overall red blood cell health and can signal the presence of underlying medical issues or nutrient deficiencies.

Which is RDW's Function in Our Bodies

The primary function of RDW is to assess the uniformity of red blood cell size within a blood sample. Normally, red blood cells are relatively uniform in size; however, increased variation in size (anisocytosis) can indicate a problem. RDW is particularly useful in diagnosing types of anemia and can be helpful in identifying nutritional deficiencies such as iron, vitamin B12, or folate deficiencies. It is also used to monitor the response to treatments and the progression of various diseases.

RDW can be a significant marker when distinguishing between different types of anemia, for example, differentiating between iron deficiency anemia (often associated with a high RDW) and anemia of chronic disease (which usually has a normal RDW).

What Happens if We Have Values Out of Normal

If your RDW levels are outside the normal range, it can lead to several health implications. A higher than normal RDW value can suggest nutritional deficiencies—such as a lack of iron, folate, or vitamin B12—and can also indicate chronic inflammation, liver disease, or other chronic illnesses. It may also be seen in bone marrow disorders or in cases of chronic heart disease or certain cancers.

Conversely, if the RDW is at the lower end or normal but you have other symptoms, further testing should be conducted to rule out conditions or evaluate other parameters in the context of your overall health. Having RDW values that are not typical for you regularly should prompt a discussion with a healthcare provider to determine the underlying cause and necessary treatment.

What Are the Optimum RDW Values and What Should We Do to Improve Them

Typically, the normal range for RDW in adults is 11% to 15%. However, this range can slightly vary based on the laboratory standards. Achieving and maintaining optimal RDW levels involves ensuring a balanced and nutritious diet rich in iron, vitamin B12, and folate, as these nutrients are essential for red blood cell production and overall health.

Improving your RDW levels might include dietary changes such as increasing your intake of green leafy vegetables, lean meats, fortified cereals, and beans. Additionally, regularly exercising and maintaining a healthy lifestyle can positively impact RDW. It is always advisable to consult with a healthcare provider before making major dietary changes or starting new supplements.

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