Populate result in background if user is too quick

Working on a customer support platform where the users quickly type employee numbers, and typeahead fetches names (etc.). Often the users already know the employee numbers though, so they quickly type it and press TAB. If typeahead is not quick enough to fetch the data before focus is lost, nothing will get populated.

Is there a way to force a lookup, by input value, if the user leaves the typeahead-field and there is a fetch pending (using TAB in this case)?