TSI slant
（重定向自TSI agar）
![TSI agar slant results: (from left) preinoculated (as control),
P. aeruginosa, E. coli, Salmonella Typhimurium, Shigella flexneri](/Images/godic/202502/18/TSIagar3301.JPG")
![Various reactions seen in TSI agar](/Images/godic/202502/18/TSI_agar3301.jpg")
The Triple Sugar Iron (TSI) test is a microbiological test roughly named for its ability to test microorganism's ability to ferment sugars and to produce hydrogen sulfide. It is often used in the selective identification of enteric bacteria including Salmonella and Shigella.