The BUN (Blood Urea Nitrogen) to creatinine ratio is a helpful indicator of kidney function. A high ratio may suggest dehydration or an upper gastrointestinal bleed, while a low ratio could indicate liver disease or malnutrition. How did you come across this topic? Are you concerned about your own or a loved one's kidney health? It's understandable to feel uncertain about medical results, and I'm happy to help explore more about this.