Peer-reviewed veterinary case report
Thyroid hormone test results in healthy and sick cats
By van Hoek, Ingrid M et al.·Published in Journal of Feline Medicine and Surgery·2010·Department of Medicine and Clinical Biology of Small Animals, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium·View original on Crossref →
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Original publication title: Thyroid stimulation with recombinant human thyrotropin in healthy cats, cats with non-thyroidal illness and in cats with low serum thyroxin and azotaemia after treatment of hyperthyroidism
- Species:
- cat
Plain-English summary
A group of healthy cats and cats with other illnesses were given a hormone test to see how their thyroids responded. The healthy cats showed a significant increase in thyroid hormone levels after treatment, while the cats that had low thyroid hormone levels after treatment for hyperthyroidism did not respond as well. This test can help veterinarians determine if a cat's low thyroid hormone levels are due to a previous treatment or another underlying issue.
People also search for: cat thyroid hormone test · why is my cat lethargic · treatment for cat hyperthyroidism
Abstract
This study investigated the recombinant human thyrotropin (rhTSH) stimulation test in healthy cats (group 1), cats with non-thyroidal illness (group 2) and cats with low serum total T 4 (TT 4 ) and azotaemia after 131 I treatment (group 3). Serum TT 4 responses and thyroidal pertechnetate uptake after administration of 25 μg rhTSH IV were assessed. Baseline serum TT 4 was significantly lower in group 3 compared with group 1, but not between other group pairs. Serum TT 4 increased significantly in groups 1 and 2 but not in group 3 after rhTSH administration. Post-rhTSH serum TT 4 concentrations differed significantly between groups 1 and 3 and groups 2 and 3, but not between groups 1 and 2. Thyroid/salivary gland uptake ratio (T/S uptake ratio) differed only significantly between groups 1 and 3. Stimulation with rhTSH is valuable to differentiate euthyroidism from iatrogenic hypothyroidism in cats.
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Search related cases →Original publication on Crossref: https://doi.org/10.1016/j.jfms.2009.08.002