Leukocytes in the urine sediment and a positive nitrite reaction on the urinary colorimetric strip provide presumptive evidence that the patient might have:

Leukocytes in the urine sediment and a positive nitrite reaction on the urinary colorimetric strip provide presumptive evidence that the patient might have:

• A. Neoplasm
• B. Bacterial infection
• C. Diabetic condition
• D. Renal failure

Answer: (B)

Leukocytes in urine sediment signal inflammation from infection, and a positive nitrite reaction on a urine dipstick occurs when nitrate-reducing bacteria are present in the urine. Put together, these findings strongly point to a urinary tract infection caused by bacteria. The other conditions listed—neoplasm, diabetes, or renal failure—don’t typically produce nitrite in the urine as a marker of infection, so they’re less likely explanations for this pattern.

Leukocytes in urine sediment signal inflammation from infection, and a positive nitrite reaction on a urine dipstick occurs when nitrate-reducing bacteria are present in the urine. Put together, these findings strongly point to a urinary tract infection caused by bacteria. The other conditions listed—neoplasm, diabetes, or renal failure—don’t typically produce nitrite in the urine as a marker of infection, so they’re less likely explanations for this pattern.