ABNORMAL SERUM TSH Abnormal Serum TSH Decreased TSH Increased TSH Decreased Free T4 Normal Free T4 Increased Free T4 Decreased Free T4 Normal Free T4 Hypopituitarism Thyrotoxicosis Hypothyroidism Sub-clinical Hypothyroidism Recovery from Non-Thyroid Illness Decreased Free T3 Normal Free T3 Increased Free T3 Non-Thyroid IllnessT3 Toxicosis Sub-Clinical Thyrotoxicosis*refer to hyperthyroidism scheme pg 142*refer to hypothyroidism scheme pg 143

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