What does high RDW SD and Vitamin B12 mean in blood test?

High RDW SD and Vitamin B12 can be caused by numerous problems.

High levels of RDW SD and Vitamin B12 in the blood indicate a variety of health problems. If your blood RDW SD level is between 39 fL to 46 fL and the Vitamin B12 level is between 211 fL to 911 pg/mL, then your body does not have any underlying health problems. But if RDW SD and Vitamin B12 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	39.723
5-10 years	40.459
10-15 years	41.209
15-20 years	41.973
20-25 years	42.751
25-30 years	43.544
30-35 years	44.351
35-40 years	45.173
40-45 years	45.158
45-50 years	45.995
50-55 years	45.979
55-60 years	45.963
60-70 years	45.947
70-80 years	45.931
80-90 years	45.916
90-100 years	45.9
>100 years	45.884

*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 Vitamin B12 range : 211 - 911 pg/mL

Age-wise ideal Vitamin B12 level in blood:

Age	Ideal Vitamin B12 value
<5 years	214.912
5-10 years	218.896
10-15 years	222.954
15-20 years	227.088
20-25 years	231.298
25-30 years	235.586
30-35 years	239.954
35-40 years	244.403
40-45 years	248.934
45-50 years	253.549
50-55 years	258.25
55-60 years	263.038
60-70 years	267.915
70-80 years	272.882
80-90 years	277.941
90-100 years	283.094
>100 years	288.343

High RDW SD and Vitamin B12 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 911 pg/mL for Vitamin B12, 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 Vitamin B12 test. In most hospitals RDW SD and Vitamin B12 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.