Final answer:
The presence of white blood cells in the urine suggests a potential urinary tract infection, requiring immediate further medical action such as a urine culture test.
Step-by-step explanation:
A client with which of the following, if noted in the client's urine analysis, would require further actions? A) Protein B) Bacteria C) Bilirubin D) White Blood Cells. The presence of white blood cells (WBCs) in the urine, typically indicates a possible urinary tract infection (UTI). Similarly, the detection of protein might suggest a kidney condition, while the presence of bilirubin could imply liver dysfunction. However, the finding of bacteria in urine is a direct indication of infection, and immediate medical attention and further diagnostics, like a urine culture test, are required to confirm the presence and type of infection and to initiate appropriate treatment.