Jul 26, 2023 · Cystatin C is a protein made by your body. Healthy kidneys keep its level balanced. High levels of cystatin C in your blood might mean your kidneys aren't working well.

Mar 28, 2025 · Understanding the cystatin C test can help you feel more in control of your kidney health. Below, we explain how it works, what your results mean, and why your doctor may …

Serum cystatin C has been well established as an early and accurate biomarker of CKD that is particularly helpful in patients for whom creatinine is an inadequate marker or for whom more …

The cystatin superfamily encompasses proteins that contain multiple cystatin-like sequences. Some of the members are active cysteine protease inhibitors, while others have lost or …

Jul 26, 2025 · Normal cystatin C ranges can vary between laboratories, but fall within a specific range, such as 0.6 to 1.0 mg/L for adults. An elevated cystatin C level in the blood indicates a …

Learn what a Cystatin C test is, how it works, and why it’s a reliable kidney function test. Discover its benefits over creatinine tests and how to interpret results.

Sep 1, 2025 · Cystatin C is a cysteine protease inhibitor with a molecular weight of about 13 kDa that is produced at a constant rate by all nucleated cells. It is freely filtered by the glomerulus, …

Your body makes cystatin C constantly, and the protein is found in different fluids, including blood, spinal fluid, and breast milk. When your kidneys are healthy, they filter cystatin C out of the …

Cystatin C is a low-molecular weight (13,250 Da) cysteine proteinase inhibitor that is produced by all nucleated cells and found in body fluids, including serum.

Aug 11, 2025 · Because cystatin C is less affected by muscle size, diet, or hydration than creatinine, it gives a clearer picture of cystatin C kidney function and often improves early CKD …