A patient is provided with a collection jug and instructions for a 24-hour urine specimen. Which of the following instructions is most critical for ensuring the accuracy of the collection?
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A
Keep the collection jug at a consistent room temperature throughout the 24 hours.
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B
Discard the first morning specimen, start the timing, and then collect all subsequent urine, including the first morning specimen on the final day.
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C
Collect the very first specimen of the day, note the time, and then collect all urine for the next 24 hours.
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D
Ensure the final volume is at least 3 liters to be considered an adequate sample.