24-hour urine protein measures the amount of protein released in urine over a 24-

hour period.The normal value is less than 100 milligrams per day or less than 10

milligrams per deciliter of urine.Urine samples are collected in one or more

containers over a period of 24 hours. The containers are kept in a cool environment

and then sent to a lab for analysis. Specialists then check the urine for protein.