How is hypothyroidism due to thyroid surgery diagnosed?

Updated: Feb 27, 2020
  • Author: Pramod K Sharma, MD; Chief Editor: Arlen D Meyers, MD, MBA  more...
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The most useful laboratory test for detecting or monitoring of hypothyroidism in the patient who has undergone thyroidectomy is the measurement of thyrotropin (thyroid-stimulating hormone [TSH]) levels. Total T4 and T3 levels may be useful to fine-tune the dosing of levothyroxine (Synthroid), but may be unhelpful in the typical postoperative patient.

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