Medicine

Subclinical hyperthyroidism

Subclinical hyperthyroidism

[A] High TSH and low FT3
[B] Low TSH and high FT4
[C] High TSH and low FT4
[D] Low TSH and normal FT4 and/or FT3

ANSWER

[D] Low TSH and normal FT4 and/or FT3

Subclinical

High TSH and normal FT4 (and FT3) -This pattern of results can signify ‘Subclinical hypothyroidism
Low TSH and normal FT4 and/or FT3 – Subclinical hyperthyroidism