25th August 2020

A 23-year-old woman attends a GP appointment. For the past few weeks she has been feeling unusually anxious and restless

A 23-year-old woman attends a GP appointment. For the past few weeks she has been feeling unusually anxious and restless, lost half a stone in weight, and been feeling very hot and sweaty even when only wearing a t-shirt. She has also had some episodes where she can feel her heart racing in her chest and has noticed some blurred vision and a feeling of ‘something being stuck in her eye’ – despite having had an eye test only a month or so ago. She has a history of Coeliac disease but is otherwise well. The GP performs some blood tests, which show a low level of thyroid-stimulating hormone, and arranges some further investigations.

Which of the following antibody tests would be most likely to be positive in this case?

Select the SINGLE most appropriate option from the list below. Select ONE option only.