Does Subclinical Hyperthyroidism Exist in Cats?

Wakeling J., Elliott J. and Syme H.S.

Journal of Veterinary Internal Medicine, 2006. 20(3): p.726.

Hyperthyroidism (HTH) in cats has strong parallels with toxic nodular goitre (TNG) in humans. A well-defined sub-clinical phase exists in TNG where thyroid hormone concentrations are within the reference range but thyroid stimulating hormone (TSH) concentration is sub-normal. The aim of this study was to determine if a sub-clinical phase of HTH could be identified in cats that were apparently euthyroid when first examined but that were subsequently diagnosed with HTH.