Cystatin C

Understanding Cystatin C

Cystatin C is a protein made by almost all cells in the body. Its level in the blood can show how well your kidneys are working. Cystatin C is more accurate than other kidney tests such as creatinine as it is less influenced by muscle mass. This makes it a useful kidney marker for people with low muscle mass, like older adults, amputees, or those with muscle problems.

The Cystatin C test is often suggested when a doctor suspects kidney problems. However, the typical kidney tests, such as creatinine or creatinine c...

What does Cystatin C measure?

The Cystatin C is a blood test that measures the level of cystatin C, a protein produced by all body cells and excreted by the kidneys. This test helps doctors see how well your kidneys are working, especially if other tests like creatinine are unreliable.