Cystatin in Urine

24-hour urine: To start the collection of urine, the first morning urine is discarded and then all successive urinations are deposited in a container, recording the start time, including the first of the next day (keep the container in a cool place ). Complying with the 24-hour schedule from the first collection, deliver a 24-hour urine container to the phlebotomist. Random urine: collect 10 ml of urine at a medium stream in a container, preferably the first urine in the morning or having at least 2 hours of urinary withdrawal. In children, the minimum volume is 3 mL in a collection bag.

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