Cystatin C or cystatin 3 (formerly gamma trace, post-gamma-globulin, or neuroendocrine basic polypeptide), a protein encoded by the CST3 gene, is mainly used as a biomarker of kidney function.
A protein called cystatin C or cystatin 3 (previously known as gamma trace, post-gamma-globulin, or neuroendocrine basic polypeptide) is mainly employed as a marker for assessing kidney health.