امرأة عمرها ٥٥ سنة عندها بروتين في البول، وطُلب لها جمع بول ٢٤ ساعة يبدأ الساعة ٨ صباحاً. في الساعة ٨ صباحاً تبولت، وتسأل الممرضة ماذا تفعل بهذه العينة الأولى. أي تعليمات صحيحة؟

A 55-year-old woman with proteinuria is to collect 24-hour urine starting at 08:00. She voided at 08:00 and asks what to do with that first sample. Which instruction is correct?

1. Keep the first sample in the container and discard tomorrow’s last one
2. Collect just one midstream sample
3. Collect daytime urine only and leave out the night urine
4. Discard the first sample, then collect all urine until 08:00 tomorrow

Answer: D) Discard the first sample, then collect all urine until 08:00 tomorrow. Collection starts with an empty bladder: discard the first void, collect all urine for 24 hours and include the final void at the end time. A missed sample means restarting.