<prompt> Urea breath test is done in:KetoacidosisH. pylori infectionKidney diseaseLiver disease  <response>: The urea breath test is a rapid diagnostic procedure used to identify infections by Helicobacter pylori, a spiral bacterium implicated in gastritis, gastric ulcer, and peptic ulcer disease. It is based upon the ability of H. pylori to convert urea to ammonia and carbon dioxide. 