Which of the following might indicate a problem seen in a urinalysis?

The presence of bilirubin in a urinalysis is significant and may indicate potential health problems, particularly concerning liver function or biliary obstruction. Bilirubin is a byproduct of the breakdown of red blood cells and is typically processed by the liver. When there are elevated bilirubin levels in the urine, it can suggest that the liver is not functioning properly, or it may indicate the presence of conditions such as liver disease, hemolysis, or a blockage in the bile ducts.

In contrast, normal glucose levels, consistent hydration levels, and the presence of creatinine at standard levels do not typically indicate problems; rather, they are signs of normal kidney and metabolic function. Normal glucose levels reflect the absence of uncontrolled diabetes or renal glycosuria, consistent hydration indicates proper fluid balance, and creatinine is a waste product that when at standard levels suggests that kidney function is adequate.