Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Proteinuria ?
    ### Response:
    Until recently, an accurate protein measurement required a 24-hour urine collection. In a 24-hour collection, the patient urinates into a container, which is kept refrigerated between trips to the bathroom. The patient is instructed to begin collecting urine after the first trip to the bathroom in the morning.
    