Hi, doctors will ask you to do 24 hrs urine protein to assess kidney funtion in conditions like uncontrolled diabetes,high blood pressure, lupus (an autoimmune disease), urinary tract infections (UTIs). Usually, you have to start in the morning. You will urinate, flush down the urine, and then begin keeping track of time. You will collect the rest of your urine for the next 24 hours. Save your urine from the 24-hour time period, storing it in a cool environment. It can be kept cool in the refrigerator or on ice in a cooler. Label the container with your name, date, and time of completion take your urine to the lab for analysis. Contact laboratory people for containers and furthur guidance.