[The sulfate salt of barium, an alkaline, divalent metal. Barium sulfate is quite insoluble in water, and is used as a radiopaque agent to diagnose gastrointestinal medical conditions. Barium sulfate is taken by mouth or given rectally. (NCI04) ( NCI )]
UMLS (NCI) C0004754 - Indicator, Reagent, or Diagnostic Aid
- Inorganic Chemical