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RDW
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Red Cell Distribution Width
What's
RDW
?
Red Cell Distribution Width (RDW) is a test used to check the differences in size and volume of your red blood cells. These cells, which are the most common type in your body, carry oxygen from your lungs to all other parts of your body. Usually, red blood cells are similar in size, but some conditions can cause them to vary. The RDW test is part of a routine complete blood count (CBC) and offers important information about this variation. A higher RDW value means there's a bigger difference in red blood cell size, while a lower RDW value indicates more consistency.
If Your Levels Are High
A high RDW value means that your red blood cells are coming in different sizes, which can happen when your body is dealing with certain health issues. This might be because you're not getting enough important nutrients like iron, vitamin B12, or folate, which help make red blood cells. It could also be a sign of other problems like anemia, liver disease, or issues with your bone marrow. Sometimes, taking certain medications, drinking alcohol, or having long-term inflammation can also make your RDW higher.
Symptoms of High Levels
Symptoms of high levels of RDW may not be directly noticeable, as they often align with the symptoms of the underlying condition causing the variation in red blood cell size. These could include fatigue, weakness, shortness of breath, pale or yellowish skin, and irregular heartbeats.
If Your Levels are Low
A low RDW value means that your red blood cells are more consistent in size and volume than usual. This can be a sign of healthy bone marrow producing red blood cells efficiently. However, it could also be related to certain conditions like chronic illnesses or iron deficiency anemia. Some medications, such as those used to treat anemia, might also contribute to lower RDW levels.
Symptoms of Low Levels
Symptoms of low levels of RDW are typically not distinct and may not be noticeable, as they often overlap with symptoms of the underlying conditions that cause the low RDW.
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Red Cell Distribution Width
CBC w/ Diff
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BostonHeart Diagnostics
Whole Blood
The CBC with differential analyzes blood cells to evaluate a patient's overall health and to screen for a variety of diseases and conditions. Please be advised that Boston Heart Diagnostics policy states that practitioners are unable to order labs on themselves or their immediate family members.
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