Searchable abstracts of presentations at key conferences in endocrinology

ea0090ep1022 | Thyroid | ECE2023

Exogenous biotin interference in streptavidin-biotin immunoassays: Interpret results with caution

Innes Rachael , McGuire Jacqueline , Mukhopadhyay Babu

A 52-year-old patient with a history of secondary progressive multiple sclerosis was referred to our endocrine vetting service with deranged thyroid function tests (TFTs). Medicines reconciliation demonstrated that the patient was currently on regular fampridine and carbamazepine only. TFTs checked in the community revealed a free T4 of 65.8pmol/l (12.0-22.0pmol/l) with a TSH of 2.03mU/l (0.27-4.20mU/l) and a free T3 of 5pmol/l (3.1-6.8pmol/l). 25-OH vitamin D and vitamin B12 ...