TSHR and thyrotoxicosis: Here we compare the diagnostic performance of color Doppler thyroid ultrasound (CDU) with measurement of thyroid artery systolic velocities, thyroid scintigraphy with Tc99 and anti-thyroid-stimulating hormone receptor antibodies (TRABs) to differentiate GD from ST in a tertiary center in Cali, Colombia, between 2022-2024.<h4>Methods</h4>This single-center prospective study included 78 adult patients diagnosed with thyrotoxicosis between January 2022 and October 2024.