Used in biomedical research to measure levels of insulin-like growth factor binding protein 3 (IGFBP-3) in rat samples. This kit enables researchers to study the regulation of growth hormone activity, cell growth, and development in experimental models. It is commonly applied in endocrinology, metabolism studies, and aging research. The assay helps assess changes in IGFBP-3 under various physiological and pathological conditions, such as malnutrition, diabetes, and hormonal disorders. It is also useful in toxicology and drug development studies where growth pathways are monitored.