Tritryst (Triiotrastum; synonym Natrii acetrizoas) - the contrast agent. Apply tritryst for x-ray studies renal pelvis, ureter, bladder, and blood vessels (except for vessels of the brain and heart. Depending on the purpose of the study is administered from 20 to 60 ml 30-70% solution heated to body temperature. Method of production of cryotruth: ampoules and 10 ml of 30, 50, 70% solution, vials of 20 ml of 50, 70% solution and ampoules of 2 ml (testamony) 30, 50, 70% solution. Store in a cool dark place. Cm. also a Contrast agent.