TFTs Flashcards
1
Q
Thyrotoxicosis (e.g. Graves’ disease)
A
Low TSH
High free T4 (or T3)
2
Q
Primary hypothyroidism
A
High TSH
Low free T4
3
Q
Secondary hypothyroidism (pituitary hypothyroidism)
A
Low TSH
Low free T4
4
Q
Sick euthyroid syndrome
A
Low TSH
Low free T4
5
Q
Subclinical hypothyroidism
A
High TSH
Normal T4
6
Q
Poor compliance with thyroxine
A
High TSH
Normal T4
7
Q
Steroid therapy
A
Low TSH
Normal T4
