Abstract: A two-tier disposable tray for retaining instruments and other items used in conducting percutaneous transhepatic cholangiographies (PTC's) in an organized and easily accessible manner within a sterile environment. The upper tier slideably engages the lower tier of the tray. The tray and its components are in ready-to-use package form with the package adapted to be opened at the patient's side at the time the PTC is performed.