Used in research settings to measure thyroxine (T4) hormone levels in porcine (pig) serum or plasma samples. This kit enables accurate quantification of T4 through enzyme-linked immunosorbent assay (ELISA), supporting studies in veterinary endocrinology, thyroid function, metabolic research, and reproductive health in swine. Commonly applied in academic research, pharmaceutical development, and animal health diagnostics to assess thyroid activity and detect abnormalities such as hypothyroidism or hyperthyroidism in pig models.