Used in research settings to quantify cystatin C levels in rat biological samples such as serum, plasma, or tissue homogenates. This ELISA kit enables accurate measurement of cystatin C, a biomarker for assessing renal function and glomerular filtration rate in preclinical studies. It is commonly applied in studies related to kidney disease, inflammation, and neurodegenerative disorders in rat models. The assay helps researchers evaluate changes in cystatin C under experimental conditions, supporting drug development and toxicology studies. High sensitivity and specificity allow detection of low concentration changes, making it valuable for monitoring disease progression or therapeutic response.