Hi,
Noted the history about your 16 year old son.
All the symptoms may be related to multiple problems.
T3 alone has no values as this gets converted to T4 before being active and causing the symptoms.
Hence I would advise you the following in such a situation:
First of all get the full thyroid test on an empty stomach. that is Free T3, Free T4 and
TSH along with anti-TPO thyroid
antibodies as there is pain in neck and may be in the thyroid area due to
thyroiditis. Thyroiditis can cause fluctuating thyroid hormone and TSH levels and should be correlated with clinical symptoms and signs after clinical evaluation and examination by a Doctor.
Also needed are further investigations to get the proper cause.
Being 16 year old psychological aspect of the multiple problems too should be considered and evaluated, treated if present.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. T Chandrakant,
General Surgeon.