Tryptic Soy Broth is a ready-to-use, general-purpose broth of casein and soybean digests, glucose, and sodium chloride. The 1 L fill supports routine testing.

It is commonly used with fluid thioglycollate medium for sterility testing of biologics, pharmaceuticals, and other products, where it recovers aerobic bacteria and fungi. It also supports growth promotion testing and general microbial culture.