A nurse is initiating a 24-hour urine collection for a client at home. What will be the first thing the nurse will ask the client to do at the beginning of the specimen collection?

The correct answer is A: Void and discard the urine. The rationale is that in a 24-hour urine collection, the nurse needs to ensure accurate results by starting with an empty bladder to avoid contaminating the sample with urine that has been in the bladder for a while. Discarding the first voiding helps establish the baseline for the collection period. This step ensures that the collected urine is representative of the client's urinary output over the specified 24-hour period. The other choices are incorrect because adding the first voiding (B) would introduce inaccurate data, keeping the urine warm (C) is unnecessary for most tests, and beginning the collection at a specific time (D) may not align with the client's natural urination pattern.