Used in research settings to measure levels of antidiuretic hormone (ADH) in biological samples such as plasma or serum. This ELISA kit enables scientists to study disorders related to water balance, including diabetes insipidus, syndrome of inappropriate antidiuretic hormone secretion (SIADH), and dehydration. It is also applied in endocrine research to investigate hypothalamic-pituitary function and hormonal regulation. The assay provides a sensitive and specific method for quantifying ADH concentrations, supporting both clinical studies and basic science investigations into fluid homeostasis and stress responses.