My husband had thyroid test done by his GP
TSH 5.9 (0.27-4.2)
T4 17.9 (12-22)
T3 wasn't done. The GP said they will keep an eye on it but didn't give him any medication. He is very tired all the time. I want him to go back and ask for medication as I'm sure he is hypo. Just want to ask why is T4 in a healthy range while TSH so high? Any thoughts?