What does high RDW SD and TIBC mean in blood test?

High RDW SD and TIBC can be caused by numerous problems.

High levels of RDW SD and TIBC in the blood indicate a variety of health problems. If your blood RDW SD level is between 39 fL to 46 fL and the TIBC level is between 250 fL to 450 mcg/dL, then your body does not have any underlying health problems. But if RDW SD and TIBC levels exceed these levels, you should see a doctor immediately.

Normal RDW SD range : 39 - 46 fL

Age-wise ideal RDW SD level in blood:

Age	Ideal RDW SD value
<5 years	39.73
5-10 years	40.473
10-15 years	41.23
15-20 years	42.001
20-25 years	42.787
25-30 years	43.588
30-35 years	44.404
35-40 years	45.235
40-45 years	45.219
45-50 years	45.203
50-55 years	45.187
55-60 years	45.171
60-70 years	45.155
70-80 years	46
80-90 years	45.984
90-100 years	45.968
>100 years	45.952

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

If you want your blood test report to be interpreted by RDW SD specialist, then you can upload your report. Our RDW SD 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 SD levels include:

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

If you want your blood test report to be interpreted by RDW SD specialist, you can upload your report. Our RDW SD 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 TIBC range : 250 - 450 mcg/dL

Age-wise ideal TIBC level in blood:

Age	Ideal TIBC value
<5 years	254.678
5-10 years	259.443
10-15 years	264.297
15-20 years	269.242
20-25 years	274.28
25-30 years	279.412
30-35 years	284.64
35-40 years	289.966
40-45 years	295.391
45-50 years	300.918
50-55 years	306.548
55-60 years	312.284
60-70 years	318.127
70-80 years	324.079
80-90 years	330.143
90-100 years	336.32
>100 years	342.613

High RDW SD and TIBC 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 46 fL for RDW SD and more than 450 mcg/dL for TIBC, 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 SD and TIBC test. In most hospitals RDW SD and TIBC 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.