What causes high ALT SGPT and low BUN?

High ALT SGPT and low BUN can be caused by many reasons.

If your ALT SGPT is in between 21 U/L and 72 U/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 ALT SGPT 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 ALT SGPT : 21 - 72 U/L

Ideal values of ALT SGPT depending on age :

Age	Ideal ALT SGPT value
<5 years	21.366
5-10 years	21.738
10-15 years	22.116
15-20 years	22.501
20-25 years	22.893
25-30 years	23.292
30-35 years	23.698
35-40 years	24.111
40-45 years	24.531
45-50 years	24.958
50-55 years	25.393
55-60 years	25.835
60-70 years	26.285
70-80 years	26.743
80-90 years	27.209
90-100 years	27.683
>100 years	28.165

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

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

• Alcohol abuse
• Blockage of the bile ducts.
• Kidney damage.
• Damage to red blood cells
• Heart attack or heart failure

If you want your blood test report to be interpreted by ALT SGPT specialist, you can upload your report. Our ALT SGPT 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 ALT SGPT and low BUN can be caused by a lot of reasons. If you take ALT SGPT and BUN blood tests and the results are higher than 72 U/L for ALT SGPT 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 ALT SGPT and BUN Tests Are Done :

If your doctor wants ALT SGPT and BUN tests on you, you may need to go through these tests. During the ALT SGPT 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 ALT SGPT and BUN Test reports by your pathologist.

Medical References

• Mayo Clinic – Alanine aminotransferase (ALT) blood test
• MedlinePlus – ALT Blood Test
• WebMD – Alanine Aminotransferase (ALT) Test: What Does It Mean?
• Cleveland Clinic – Alanine Transaminase (ALT) Blood Test: What It Is, Procedure & Results