What do you do with the first fluid you collect for a 24 hour urine collection?

The first fluid collected during a 24-hour urine collection is typically discarded. This is because it may not accurately represent the total urine output for the 24-hour period, as it could contain residual urine from the previous day. After discarding the first sample, you should note the time and begin the collection period, ensuring all subsequent urine is collected in the designated container.