Description
Blood, NA, Fasting or Non Fasting: As suggested by doctor.
Sample Required:
A small sample of blood is required for the RDW (Red Cell Distribution Width) test. It is typically collected through a simple blood draw from a vein in the arm.
Test Time:
The test results are usually available within a day or two after the blood sample is taken, depending on the laboratory and healthcare facility.
Test Normal Range:
The normal range for RDW is typically between 11.5% and 14.5%. However, the reference range may vary slightly depending on the laboratory and the specific testing method used.
What is the test?
The RDW blood test measures the variation in the size of red blood cells (RBCs) in a blood sample. It provides information about the degree of variability in the size of RBCs, which can help in the diagnosis and monitoring of certain medical conditions.
Test Procedure:
To perform the RDW blood test, a healthcare professional will clean the area on your arm and insert a needle into a vein. A small amount of blood will be drawn and collected in a test tube or vial. The sample is then sent to a laboratory for analysis.
When to take the test?
The RDW blood test may be ordered as part of a routine complete blood count (CBC) or if a healthcare provider suspects an underlying condition affecting the size of red blood cells. The test may be used to evaluate conditions such as anemia, nutritional deficiencies, or certain chronic diseases.
Who should take this test?
Individuals with symptoms of anemia, such as fatigue, weakness, pale skin, or shortness of breath, may be recommended to take the RDW blood test. Additionally, those with known blood disorders or chronic diseases affecting red blood cells may undergo this test to monitor their condition.
Precautions for exceptional cases (pregnancy etc.):
There are generally no specific precautions for the RDW blood test. However, it is always important to inform your healthcare provider if you are pregnant or have any other medical conditions or concerns that may impact the interpretation of the test results.
FAQs for RDW Blood Test:
Q1: What does a high RDW value indicate?
A: A high RDW value suggests increased variability in the size of red blood cells, which can be seen in various conditions such as nutritional deficiencies, anemias, or certain chronic diseases. Further evaluation is needed to determine the underlying cause.
Q2: Can RDW be used to diagnose a specific condition?
The RDW test alone cannot diagnose a specific condition, but it can provide additional information when evaluated alongside other blood parameters. It helps healthcare providers assess the size distribution of red blood cells, aiding in the diagnosis and monitoring of certain conditions.
Q3: Is fasting required before the RDW blood test?
A: No, fasting is not required for the RDW blood test. However, if other tests are being conducted alongside the RDW, your healthcare provider may provide specific instructions regarding fasting.
Q4: Can medications affect the RDW test results?
A: Certain medications, such as chemotherapy drugs or medications that affect red blood cell production or size, may impact the RDW results. It is important to inform your healthcare provider about any medications you are taking.
Q5: How often should the RDW blood test be done?
A: The frequency of the RDW blood test depends on your specific medical condition and the recommendations of your healthcare provider. It may be performed as part of regular check-ups or as needed for monitoring certain conditions. Follow your healthcare provider’s advice for the appropriate testing schedule.
*Please note that the information provided here is for general knowledge and should not replace the advice and guidance of a healthcare professional. If you have specific concerns or questions about the RDW blood test, it is recommended to consult with your healthcare provider or a qualified medical professional.
