What causes high Sodium and low BUN?

High Sodium and low BUN can be caused by many reasons.

If your Sodium is in between 136 mmol/L and 145 mmol/L and your BUN is in between 6 mg/dL and 20 mg/dL then you need not worry as these are the normal ranges for Sodium and BUN respectively. But if your levels are lesser or greater than the above values, then there may be some problem in your body.

Normal range of Sodium : 136 - 145 mmol/L

Ideal values of Sodium depending on age :

Age	Ideal Sodium value
<5 years	138.368
5-10 years	140.777
10-15 years	143.228
15-20 years	143.185
20-25 years	143.142
25-30 years	143.099
30-35 years	143.055
35-40 years	143.012
40-45 years	142.969
45-50 years	142.926
50-55 years	142.882
55-60 years	142.839
60-70 years	142.796
70-80 years	142.753
80-90 years	142.709
90-100 years	142.666
>100 years	142.623

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

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

1,37,160

Total number of patients treated

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

• Conditions that lead to too much anti-diuretic hormone (ADH)
• Cushing syndrome
• Nephrotic syndrome
• Diabetes insipidus
• Excess fluid buildup in the body (edema) caused by heart failure

If you want your blood test report to be interpreted by Sodium specialist, you can upload your report. Our Sodium 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 range of BUN : 6 - 20 mg/dL

Ideal values of BUN depending on age :

Age	Ideal BUN value
<5 years	6.104
5-10 years	6.21
10-15 years	6.318
15-20 years	6.428
20-25 years	6.54
25-30 years	6.654
30-35 years	6.77
35-40 years	6.888
40-45 years	7.008
45-50 years	7.13
50-55 years	7.254
55-60 years	7.38
60-70 years	7.508
70-80 years	7.639
80-90 years	7.772
90-100 years	7.907
>100 years	8.045

High Sodium and low BUN can be caused by a lot of reasons. If you take Sodium and BUN blood tests and the results are higher than 145 mmol/L for Sodium and lower than 6 mg/dL for BUN, your physician may recommend more tests to figure out the problem. You might also get these tests if your physician thinks you have some other disease.

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How the Sodium and BUN Tests Are Done :

If your doctor wants Sodium and BUN tests on you, you may need to go through these tests. During the Sodium and BUN blood tests, a pathologist will put a needle into your veins and take out a small quantity of blood. A pathologist is a physician in the medical field who thoroughly studies the causes and effects of disease. Within a few hours you will get your Sodium and BUN Test reports by your pathologist.

Medical References

• MedlinePlus – Sodium Blood Test
• MedlinePlus – Sodium blood test
• WebMD – Sodium Levels & Sodium Blood Test