What causes high GGT and low Cystatin c?

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

If your GGT is in between 15 U/L and 85 U/L and your Cystatin c is in between 0.62 mg/L and 1.03 mg/L then you need not worry as these are the normal ranges for GGT and Cystatin c 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 GGT : 15 - 85 U/L

Ideal values of GGT depending on age :

Age	Ideal GGT value
<5 years	15.264
5-10 years	15.532
10-15 years	15.805
15-20 years	16.083
20-25 years	16.366
25-30 years	16.654
30-35 years	16.947
35-40 years	17.245
40-45 years	17.548
45-50 years	17.857
50-55 years	18.171
55-60 years	18.491
60-70 years	18.816
70-80 years	19.147
80-90 years	19.484
90-100 years	19.827
>100 years	20.176

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

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

• Blockage of the bile ducts.
• Cardiovascular disease
• Liver diseases
• Alcohol abuse
• Congestive heart failure

If you want your blood test report to be interpreted by GGT specialist, you can upload your report. Our GGT 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 Cystatin c : 0.62 - 1.03 mg/L

Ideal values of Cystatin c depending on age :

Age	Ideal Cystatin c value
<5 years	0.631
5-10 years	0.642
10-15 years	0.653
15-20 years	0.664
20-25 years	0.676
25-30 years	0.688
30-35 years	0.7
35-40 years	0.712
40-45 years	0.725
45-50 years	0.738
50-55 years	0.751
55-60 years	0.764
60-70 years	0.777
70-80 years	0.791
80-90 years	0.805
90-100 years	0.819
>100 years	0.833

High GGT and low Cystatin c can be caused by a lot of reasons. If you take GGT and Cystatin c blood tests and the results are higher than 85 U/L for GGT and lower than 0.62 mg/L for Cystatin c, 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 GGT and Cystatin c Tests Are Done :

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

Medical References

• MedlinePlus – Gamma-glutamyl Transferase (GGT) Test
• Cleveland Clinic – Gamma-Glutamyl Transferase (GGT) Test: What It Is & Results
• WebMD – Gamma-Glutamyl Transpeptidase (GGT) Test