Can you tell me about the 24 hour urine collection for protein?

What about it? 24 hour urine collection for protein is one test for renal disease. To accurately collect the specimen, go pee in the bathroom at a given time in the morning, say 8 am. Then all day pee in the jug given to you and the following morning pee in the jug at 8 am whether you feel like peeing or not. That would ensure accurate 24 hour specimen.