I persuaded my son to have his thyroid bloods done because about a year ago his TSH was in range BUT only just. So we've repeated his bloods and these are the results
TSH 4.24 high. (0.27-4.2)
FT4. 16.3. (12-22)
FT3. 5.1. (3.1-6.8)
His TSH is only just above range. He's 25 but has quite exaggerated mood swings.
His FT's look pretty good. So what does it all mean?