What Blood Test Other Than T4 Detects Thyroid Problems?
Some possible causes of your symptoms:
Detailed Answer:
Hello and thank you for asking!
I have gone through your concerns carefully.
First of all, to rule out hypothyroidism or underactive thyroid you should check TSH level.
I would say that underactive thyroid is hardly the cause of the symptoms you described (having into consideration that T4 is within the normal ranges).
They are more probably caused by estrogen disbalances due to tamoxifen treatment. Tamoxifen causes typically the above-described symptoms and 4 months of withdrawal can be considered not enough for the hormones to get back to normal levels.
Cushing syndrome or an overproduction of cortisol would be another probable pathology manifested with these symptoms.
Please discuss with your physician about it.
Wishing you good health.
Kind regards,
Dr.Mirjeta