What causes high Cystatin c and low BUN?

High Cystatin c and low BUN can be caused by many reasons.

If your Cystatin c is in between 0.62 mg/L and 1.03 mg/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 Cystatin c and BUN respectively. But if your levels are lesser or greater than the above values, then there may be some problem in your body.

Some examples of conditions that can increase or decrease Cystatin c levels include:

• Impaired kidney function
• Diabetes
• Obstructive sleep apnea
• Metabolic syndrome
• Heart disease

Normal range of Cystatin c : 0.62 - 1.03 mg/L

Ideal values of Cystatin c depending on age :

Age	Ideal Cystatin c value
<5 years	0.641
5-10 years	0.663
10-15 years	0.686
15-20 years	0.709
20-25 years	0.733
25-30 years	0.758
30-35 years	0.784
35-40 years	0.811
40-45 years	0.839
45-50 years	0.868
50-55 years	0.898
55-60 years	0.929
60-70 years	0.961
70-80 years	0.994
80-90 years	1.028
90-100 years	1.027
>100 years	1.026

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

Normal range of BUN : 6 - 20 mg/dL

Ideal values of BUN depending on age :

Age	Ideal BUN value
<5 years	6.205
5-10 years	6.417
10-15 years	6.636
15-20 years	6.862
20-25 years	7.096
25-30 years	7.338
30-35 years	7.588
35-40 years	7.847
40-45 years	8.115
45-50 years	8.392
50-55 years	8.678
55-60 years	8.974
60-70 years	9.28
70-80 years	9.596
80-90 years	9.923
90-100 years	10.261
>100 years	10.611

High Cystatin c and low BUN can be caused by a lot of reasons. If you take Cystatin c and BUN blood tests and the results are higher than 1.03 mg/L for Cystatin c 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.

This page has got the maximum number of views from the below mentioned cities (traffic in last 30 days):

How the Cystatin c and BUN Tests Are Done :

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

Medical References

• Cleveland Clinic – Estimated Glomerular Filtration Rate (eGFR): Test & Levels
• MedlinePlus – Glomerular Filtration Rate (GFR) Test
• NIH – Serum cystatin C as a marker of renal function in detection of early acute kidney injury
• NIH – Incorporation of Cystatin C Testing in Clinical Practice: Real World Experience in Sweden