T3 - What test to determine validity?

[outlawtas]

So my friend is convinced his T3 is bogus, as weight loss is slow (as if he was natty). (diet - 2200cals, 300g protein, cardio - 6 days week 30min - 1hr).

What test would he take check if he as elevated levels of T3? And i'm assuming that if they were abnormally high it would be real and if they were within normal range the T3 would be fake.

[Georgie]

Thyroid panel with TSH

TSH uIU/mL .350-5.50
Thyroxine (T4) ug/dL 4.5-12.0
T3 Uptake % 24-39
Free Thyroxine Index 1.2-4.9

[outlawtas]

Thyroid panel with TSH

TSH uIU/mL .350-5.50
Thyroxine (T4) ug/dL 4.5-12.0
T3 Uptake % 24-39
Free Thyroxine Index 1.2-4.9

Thank you very much.