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Endocrine Abstracts (2025) 109 EP42 | DOI: 10.1530/endoabs.109.EP42

SFEBES2025 ePoster Presentations Thyroid (8 abstracts)

Raised thyroid free hormones with unsuppressed stimulating hormone: a case report of resistance to thyroid hormones

Md Mizanour Rahman & Umesh Dashora


East Sussex Healthcare NHS Trust, St Leonards on Sea, United Kingdom


A 30-year old young man attended A&E with palpitation. He had history of ADHD with learning difficulty. Provisional diagnosis was made as hyperthyroidism. He received treatment with anti-thyroid medication and beta-blocker. On follow up, his free hormones (FT4 & FT3) were nearly unchanged with slowly rising TSH. He remained asymptomatic following the first episode of palpitation. Following cessation of treatment with anti-thyroid medication, his TSH returned to normal with high free thyroxine. Patient was subsequently discharged with advice. This case highlights the importance of early suspicion in relatively asymptomatic patient, early genetic test in young patient with relevant history and biochemical abnormality.

TFT12/06/202131/08/21
TSH (m IU/l)1.072.08
FT4 (pmol/l)4342
FT3 (pmol/l)9.39.5
TRab *(IU/l) <1.10
*Thyroid receptor antibody
TFT07/09/2222/11/2213/12/2230/12/2231/05/23 (After stopping Carbimazole)
TSH (m IU/l)9.7212.3316.9531.203.54
FT4 (pmol/l)3331262341
FT3 (pmol/l)9.59.58.08.912.9
Genetic test warranted, which confirmed THRβ-related thyroid hormone resistance.

Volume 109

Society for Endocrinology BES 2025

Harrogate, UK
10 Mar 2025 - 12 Mar 2025

Society for Endocrinology 

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