Used in research settings to quantitatively measure total thyroxine (TT4) levels in human serum or plasma samples. This ELISA kit is particularly valuable in studies related to thyroid function, endocrine disorders, and metabolic regulation. It enables researchers to assess thyroid health, monitor changes in TT4 concentrations under experimental conditions, and support the development or validation of diagnostic methods. Due to its high sensitivity and specificity, it is widely used in clinical research, pharmaceutical development, and epidemiological studies focusing on thyroid-related diseases such as hypothyroidism, hyperthyroidism, and autoimmune thyroid conditions.