Used to measure levels of Growth Differentiation Factor 15 (GDF-15) in rat biological samples such as serum, plasma, or cell culture supernatants. This kit is commonly applied in research settings to study conditions associated with inflammation, metabolic stress, cardiovascular diseases, and cancer in rat models. It enables researchers to quantify GDF-15 protein expression, helping to evaluate disease progression, response to treatment, or the role of GDF-15 in physiological and pathological processes. The assay is useful in preclinical studies where understanding the regulation of appetite, body weight, and cellular stress responses is important.