Used in research settings to measure thyroxine (T4) hormone levels in chicken serum or plasma samples. Enables endocrinologists and veterinary researchers to study thyroid function, monitor metabolic health, and assess the impact of nutrition, disease, or environmental factors on the hypothalamic-pituitary-thyroid axis in poultry. Commonly applied in agricultural research, animal health studies, and reproductive physiology to understand thyroid-related disorders and optimize poultry productivity. The kit supports high-throughput analysis with reliable quantification, making it suitable for both experimental and field studies.