PATTERN OF SERUM THYROXINE, TRIIODOTHYRONINE AND THYROTROPHIN AFTER TREATMENT OF THYROTOXICOSIS

Serial measurements of the levels of thyroxine (T4), triiodothyronine (T3) and thyrotrophin (TSH) have been made in sixty‐two patients with thyrotoxicosis during the management of their disease. Thirty‐six patients received 131I, twenty antithyroid drugs and six underwent thyroidectomy. All have been followed for 1–2 years. Serum T4 concentrations were determined by a modification of the Murphy technique (N: 5–12 μg/100 ml). Serum T3 values were assessed by the method of Sterling et al. (N: 150–270 ng/100 ml). TSH was measured by radioimmunoassay (N: 0–8 μU/ml). The following hormonal and clinical patterns were observed.

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