What should a client do with the first voided urine during a 24-hour urine collection?

During a 24-hour urine collection, the first voided urine should be discarded because it does not represent a complete collection of urine for the entire 24 hours. This initial sample could contain residual urine from the bladder, which does not accurately reflect the individual's output over the collection period. By discarding this initial void, the process ensures that the collection begins with a clean slate, allowing for accurate measurement and analysis of the total urine produced in the specified timeframe.

This practice is crucial for ensuring that the data collected is reliable, especially in the context of diagnostic testing or monitoring kidney function. The focus on starting the collection properly sets the foundation for meaningful results, which could influence treatment decisions or further investigations for the client.