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Four tests â thyroid-stimulating hormone (TSH), Free T3, Free T4 and thyroid antibodies â are required to accurately assess the function of the thyroid gland, our master gland of metabolism. An optimal TSH level should be less than 2.0, not the currently accepted 4.7 reported by most labs.
6-Steps to Heal Your Thyroid. Views 155802. 6-Steps to Heal Your Thyroid. As I explained in last weekâs blog, the thyroid system plays a critical role in your metabolism. Along with insulin and cortisol, your thyroid hormone is one of the big three hormones that control your metabolism and weight.