Use the diagram below to answer questions 2-4.
Free TRH
concentration
Free T4
concentration
104
pmol/L
520-
260-
0
pmol/L
26-
13-
0
Control Patient A Patient B
Question 2
Based on the blood work, what type of pathology could patient A have? Choose ALL that apply.
Grave's disease
primary hyperthyroidism
tertiary hyperthyroidism
Question 3
Based on the blood work, what type of pathology could patient B have? Choose ALL that apply.
secondary hypothyroidism
tertiary hyperthyroidism
Hashimoto's thyroiditis
thyrotoxicosis
Question 4
Which patient(s) could have a goiter?
patient A
patient B
both patients
neither patient