Table 9-9Schematic approach of the patient suspected of hypothyroidism.

Stage 1 Is hypothyroidism present?A. Clinical assessment:B. Biochemical assessment: TSH and FT4 assays
Stage 2 If hypothyroidism is present, what is the cause?A. Clinical assessment: history, goiterB. Biochemical assessment: TPO antibodies; sometimes thyroid ultrasound

From: Adult Hypothyroidism

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