CRP and hyperthyroidism: The typical indicators or features of SAT include disordered thyroid function, elevated erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP), low thyroid uptake of radioactive iodine or technetium-99m because of the destructive etiology of the hyperthyroidism, and a hypoechoic, irregular lesion in the thyroid lobe on thyroid ultrasonography (US) (2–5).