What does high BUN and Vitamin B12 mean in blood test?

High BUN and Vitamin B12 can be caused by numerous problems.

High levels of BUN and Vitamin B12 in the blood indicate a variety of health problems. If your blood BUN level is between 6 mg/dL to 20 mg/dL and the Vitamin B12 level is between 211 mg/dL to 911 pg/mL, then your body does not have any underlying health problems. But if BUN and Vitamin B12 levels exceed these levels, you should see a doctor immediately.

Normal BUN range : 6 - 20 mg/dL

Age-wise ideal BUN level in blood:

Age	Ideal BUN value
<5 years	6.081
5-10 years	6.163
10-15 years	6.246
15-20 years	6.331
20-25 years	6.417
25-30 years	6.504
30-35 years	6.592
35-40 years	6.681
40-45 years	6.771
45-50 years	6.863
50-55 years	6.956
55-60 years	7.05
60-70 years	7.145
70-80 years	7.242
80-90 years	7.34
90-100 years	7.439
>100 years	7.54

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

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Normal Vitamin B12 range : 211 - 911 pg/mL

Age-wise ideal Vitamin B12 level in blood:

Age	Ideal Vitamin B12 value
<5 years	213.857
5-10 years	216.753
10-15 years	219.688
15-20 years	222.663
20-25 years	225.678
25-30 years	228.734
30-35 years	231.831
35-40 years	234.97
40-45 years	238.151
45-50 years	241.376
50-55 years	244.644
55-60 years	247.956
60-70 years	251.313
70-80 years	254.716
80-90 years	258.165
90-100 years	261.661
>100 years	265.204

High BUN 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 20 mg/dL for BUN 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 BUN and Vitamin B12 test. In most hospitals BUN 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.