What does high RDW and BUN mean in blood test?

High RDW and BUN can be caused by numerous problems.

High levels of RDW and BUN in the blood indicate a variety of health problems. If your blood RDW level is between 11.6 % to 14 % and the BUN level is between 6 % to 20 mg/dL, then your body does not have any underlying health problems. But if RDW and BUN levels exceed these levels, you should see a doctor immediately.

Normal RDW range : 11.6 - 14 %

Age-wise ideal RDW level in blood:

Age	Ideal RDW value
<5 years	12.228
5-10 years	12.89
10-15 years	13.587
15-20 years	13.547
20-25 years	13.507
25-30 years	13.468
30-35 years	13.429
35-40 years	13.39
40-45 years	13.35
45-50 years	13.311
50-55 years	13.272
55-60 years	13.99
60-70 years	13.949
70-80 years	13.909
80-90 years	13.868
90-100 years	13.827
>100 years	13.786

*Ideal values ​​are calculated based on our database of patient records

If you want your blood test report to be interpreted by RDW specialist, then you can upload your report. Our RDW expert will provide you with the most accurate interpretation of your blood test results and treatment within 12 hours. Upload blood test report now

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Some examples of conditions that increase or decrease RDW levels include:

• Crohn's disease
• Chronic liver disease
• Thalassemia, an inherited blood disorder
• An iron or vitamin deficiency
• Heart disease

If you want your blood test report to be interpreted by RDW specialist, you can upload your report. Our RDW expert will provide you with the most accurate interpretation of your blood test results and treatment within 12 hours. Upload blood test report now

Normal BUN range : 6 - 20 mg/dL

Age-wise ideal BUN level in blood:

Age	Ideal BUN value
<5 years	6.325
5-10 years	6.667
10-15 years	7.028
15-20 years	7.408
20-25 years	7.809
25-30 years	8.231
30-35 years	8.676
35-40 years	9.145
40-45 years	9.64
45-50 years	10.162
50-55 years	10.712
55-60 years	11.292
60-70 years	11.903
70-80 years	12.547
80-90 years	13.226
90-100 years	13.942
>100 years	14.696

High RDW and BUN levels in the blood can cause a number of health problems. Your GP may recommend follow-up tests to get an important picture of your overall health and well-being. If the results are greater than 14 % for RDW and more than 20 mg/dL for BUN, you may also need some follow-up tests that will help detect the underlying disease early.

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How is a blood test performed in the lab?

Depending on the symptoms you are experiencing, your doctor may order a RDW and BUN test. In most hospitals RDW and BUN results can be obtained within three to six hours after blood is taken. The blood is usually drawn from a vein on the inside of the elbow or the back of the hand. Drink plenty of water before your appointment. If you experience any symptoms that you are concerned about are out of the ordinary, call your doctor immediately.