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Urine 24 Hour Collection

Much confusion exists about the proper way to collect a 24 hour urine specimen. The following protocol is recommended.

  • 24 hour urine specimens should be started Sunday through Thursday.
  • Instruct the patient to empty their bladder on the morning the collection is to start and to discard this urine.
  • Collect all urine excreted during the next 24 hours into the urine collection container provided.
  • If even one urine specimen is missed, the test should be stopped and restarted another morning.
  • Exactly 24 hours after the collection was begun, the patient should empty their bladder for the last time into the container provided.
  • The container should be delivered to the laboratory as soon as possible.
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