<p>Intolerance to uncertainty is a transdiagnostic construct that has been related to emotional processing. It has also been associated with emotional disorders (Frank, Davidson &amp; Persons, 2014). Instruments measuring may help to clarify the factors that contribute to different disorders and to understand the mechanisms of action of clinical interventions. of action on clinical interventions. The objective of the study was to analyze the psychometric characteristics of the IUS, in a sample of 644 young Colombians. Results show an adequate internal consistency of the scale. Exploratory and confirmative factorial analyzes show that the IUS is composed by two factors. In conclusion, the psychometric properties of the instrument are adequate. Therefore, they are relevant to measure the construct as a transdiagnostic variable common to different psychological disorders.</p>