My friend has graves, was treated with medication and has been treated for hypothyroid for about 10 years. She hadn't had any blood tests done for years and had been feeling a bit off - she had TSH 0.003 (range 0.30-4.5) and T4 21 (12-24). She was told her TSH was ok because she is on thyroid replacement.
Can anyone tell me if this is the norm? I assumed the aim was to restore TSH to within range?