A 24-hour urine collection has been ordered at 1030, for a child receiving vanillylmandelic acid (VMA). Urine collection should begin:
1. At 0700.
2. With the child's next void.
3. At bedtime.
4. When the order is noted.
2
Rationale:
1. It would not be an accurate collection of 24 hours of urine if the collection began at 0700.
2. A 24-hour urine collection is started after the child's next void.
3. It would not be an accurate collection of 24 hours of urine if the collection began at bedtime.
4. It would not be an accurate collection of 24 hours of urine if it began when the order was noted.
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