A nurse is caring for a 2-year-old child diagnosed with nephrotic syndrome who is in diapers and has red, edematous genitals. Which collection technique is appropriate for the nurse to obtain daily urine specimens for proteinuria testing with a urine dipstick?

A nurse is caring for a 2-year-old child diagnosed with nephrotic syndrome who is in diapers and has red, edematous genitals. Which collection technique is appropriate for the nurse to obtain daily urine specimens for proteinuria testing with a urine dipstick?