Table 1.

The eight cases in the survey ^a

Case thyroxine	Sex	Age, years	Vitality status	TSH, mU/L	Free
1	Female	70	Vital	6	Normal
2	Female	70	Vulnerable	6	Normal
3	Female	70	Vital	15	Normal
4	Female	70	Vulnerable	15	Normal
5	Female	85	Vital	6	Normal
6	Female	85	Vulnerable	6	Normal
7	Female	85	Vital	15	Normal
8	Female	85	Vulnerable	15	Normal

↵a All patients were older females with a normal body mass index and all experienced non-specific complaints resulting in fatigue. TSH = thyroid-stimulating hormone.