Is Cystatin c 1.49 high, normal or dangerous? What does Cystatin c level 1.49 mean?

📅 Medical Review Date: May 19, 2026

Your Cystatin c level of 1.49 is a High Cystatin c level.

A cystatin c level of 1.49 mg/L usually means the kidneys are not filtering waste properly. It suggests reduced kidney function. High levels of cystatin c can cause fatigue, swelling in legs and ankles, shortness of breath, confusion, nausea, and changes in urine output. This can be caused by chronic kidney disease, diabetes, high blood pressure, or heart failure. Further tests are often needed to identify the cause and guide appropriate treatment.

High Cystatin c levels may indicate underlying health problems. The normal range is typically between 0.62 mg/L and 1.03 mg/L. If your levels are outside this range, it's important to speak with a healthcare provider. Consulting a doctor is recommended to determine the cause and appropriate next steps.

The normal Cystatin c range for men is :0.62 - 1.03 mg/L

Ideal values of Cystatin c depending on age (male) :

Age	Ideal Cystatin c value
<5 years	0.629
5-10 years	0.638
10-15 years	0.648
15-20 years	0.658
20-25 years	0.668
25-30 years	0.678
30-35 years	0.688
35-40 years	0.698
40-45 years	0.708
45-50 years	0.719
50-55 years	0.73
55-60 years	0.741
60-70 years	0.752
70-80 years	0.763
80-90 years	0.774
90-100 years	0.786
>100 years	0.798

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

Get Advice via Email : Send us your blood test report, and our Cystatin c experts will review it. You'll receive a detailed analysis and personalized treatment guidance via email within 12 hours. If you have additional blood test results besides Cystatin c, please include those too—an accurate diagnosis often requires a full view of all abnormalities. Upload blood test report now

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

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

Receive world-class medical opinion about your high Cystatin c levels over email.Upload blood test report now

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

Ideal values of Cystatin c depending on age (female) :

Age	Ideal Cystatin c value
<5 years	0.63
5-10 years	0.64
10-15 years	0.65
15-20 years	0.66
20-25 years	0.67
25-30 years	0.68
30-35 years	0.69
35-40 years	0.701
40-45 years	0.712
45-50 years	0.723
50-55 years	0.734
55-60 years	0.745
60-70 years	0.756
70-80 years	0.768
80-90 years	0.78
90-100 years	0.792
>100 years	0.804

If you take a Cystatin c blood test and the results are not in the normal range (0.62-1.03 mg/L), your physician may recommend more tests to figure out the problem. You might also get this test if your physician thinks you have some other disease.

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How the Cystatin c Test Is Done :

When your doctor orders a Cystatin c test, it involves a straightforward blood draw to measure your Cystatin c levels. A pathologist or lab technician will take a small sample of blood from a vein using a needle. Your Cystatin c test results are usually available within a few hours.

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