What causes high Cystatin c and low TSH 3?

High Cystatin c and low TSH 3 can be caused by many reasons.

If your Cystatin c is in between 0.62 mg/L and 1.03 mg/L and your TSH 3 is in between 0.55 uIU/mL and 4.78 uIU/mL then you need not worry as these are the normal ranges for Cystatin c and TSH 3 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	0.642
5-10 years	0.665
10-15 years	0.688
15-20 years	0.712
20-25 years	0.737
25-30 years	0.763
30-35 years	0.79
35-40 years	0.818
40-45 years	0.847
45-50 years	0.877
50-55 years	0.908
55-60 years	0.94
60-70 years	0.973
70-80 years	1.007
80-90 years	1.005
90-100 years	1.003
>100 years	1.002

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

Normal range of TSH 3 : 0.55 - 4.78 uIU/mL

Ideal values of TSH 3 depending on age :

Age	Ideal TSH 3 value
<5 years	0.569
5-10 years	0.589
10-15 years	0.61
15-20 years	0.631
20-25 years	0.653
25-30 years	0.676
30-35 years	0.7
35-40 years	0.725
40-45 years	0.75
45-50 years	0.776
50-55 years	0.803
55-60 years	0.831
60-70 years	0.86
70-80 years	0.89
80-90 years	0.921
90-100 years	0.953
>100 years	0.986

High Cystatin c and low TSH 3 can be caused by a lot of reasons. If you take Cystatin c and TSH 3 blood tests and the results are higher than 1.03 mg/L for Cystatin c and lower than 0.55 uIU/mL for TSH 3, 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 TSH 3 Tests Are Done :

If your doctor wants Cystatin c and TSH 3 tests on you, you may need to go through these tests. During the Cystatin c and TSH 3 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 TSH 3 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