What causes high Cystatin c and low Transferrin saturation?

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

If your Cystatin c is in between 0.62 mg/L and 1.03 mg/L and your Transferrin saturation is in between 13 % and 45 % then you need not worry as these are the normal ranges for Cystatin c and Transferrin saturation 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	0.643
5-10 years	0.667
10-15 years	0.692
15-20 years	0.718
20-25 years	0.745
25-30 years	0.773
30-35 years	0.802
35-40 years	0.832
40-45 years	0.863
45-50 years	0.895
50-55 years	0.928
55-60 years	0.963
60-70 years	0.999
70-80 years	0.997
80-90 years	0.995
90-100 years	0.994
>100 years	0.993

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

Normal range of Transferrin saturation : 13 - 45 %

Ideal values of Transferrin saturation depending on age :

Age	Ideal Transferrin saturation value
<5 years	13.485
5-10 years	13.988
10-15 years	14.51
15-20 years	15.051
20-25 years	15.612
25-30 years	16.194
30-35 years	16.798
35-40 years	17.425
40-45 years	18.075
45-50 years	18.749
50-55 years	19.448
55-60 years	20.173
60-70 years	20.925
70-80 years	21.706
80-90 years	22.516
90-100 years	23.356
>100 years	24.227

High Cystatin c and low Transferrin saturation can be caused by a lot of reasons. If you take Cystatin c and Transferrin saturation blood tests and the results are higher than 1.03 mg/L for Cystatin c and lower than 13 % for Transferrin saturation, 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 Cystatin c and Transferrin saturation Tests Are Done :

If your doctor wants Cystatin c and Transferrin saturation tests on you, you may need to go through these tests. During the Cystatin c and Transferrin saturation 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 Transferrin saturation 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