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

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

Your RDW SD result may be wrong. Click to know the reason in detail

Click here to know Symptoms of High RDW SD

Click here to know Symptoms of High Vitamin B12

Besides Lab test failures, there are many other reasons for inaccurate blood results. Know the common reasons for inaccurate blood test results

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

Click here to know Symptoms of High RDW SD

Click here to know Symptoms of High Vitamin B12

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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.

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