T4 Total ELISA Kit (Feline)


Feline T4 total ELISA kit is designed to detect quantitative levels of feline total thyroxine (T4 total)  using cat serum or plasma samples. The dynamic range for this assay is 50.0 – 250.0 nmol/l.


T4 (thyroxine) problems in cats can be identified through the following symptoms; polyphagia, polyuria, polydipsia, weight loss, cardiac disease, vomiting and hyperactivity. All of these symptoms are usually an indication of hyperthyroidism. However, cats are found to not lose their appetite and are also quite active even though they are displaying the above symptoms. In majority of cases (approx. 80%) there is an enlargement of one or even both thyroid lobes that can be found. The levels of T3 and T4 serum can be decreased using a number of different drugs such as: heparin, phenothiazines, glucocorticoids and androgens.


The standard range of cat total thyroxine (T4) using current feline T4 (thyroxine) total ELISA kit is 50.0 – 250.0 nmol/l. Please contact us for the protocol insert for more details.


  1. Measurement of total thyroxine concentration in serum from dogs and cats by use of various methods. Am J Vet Res. (2006) 67 (2): 259-65. Kemppainen R.J. and Birchfield J.R.
  2. Feline focus: Diagnostic testing for feline thyroid disease: hyperthyroidism. Compend Contin Educ Vet. (2013) 35 (8): E3. Peterson M.E.
  3. Effect of illness not associated with the thyroid gland on serum total and free thyroxine concentrations in cats. J Am Vet Med Assoc. (1996) 208 (12): 2004-8. Mooney C.T., et al.
  4. Combined assessment of serum free and total T4 in a general clinical setting seemingly has limited potential in improving diagnostic accuracy of thyroid dysfunction in dogs and cats. Vet Clin Pathol. (2014) 43 (1): 1-3. Rasmussen S.H., et al.


  • Full Name: T4 Total ELISA Kit (Feline)
  • Reactivity: Feline
  • Sample Type: Plasma, Serum
  • Range: 50.0 – 250.0 nmol/l



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