Thyroid values: What’s normal?
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Use the thyroid levels, the doctor can check whether the thyroid is working properly and get information on possible malfunctions. The thyroid values indicate the concentration of the thyroid hormone T3 (tri-iodothyronine) and T4 (levothyroxine, L-thyroxine), as well as the regulating hormone in the blood TSH again. The most telling thyroid TSH value is the value (basal TSH): If it is within the reference range, this can exclude a disorder of the thyroid function normally.
(Values may vary from laboratory to laboratory.)