For a 24-hour urine collection, which procedure is correct?

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Multiple Choice

For a 24-hour urine collection, which procedure is correct?

In a 24-hour urine collection, the aim is to capture everything your body excretes over a full day so the result reflects daily excretion rather than a single void. Start by deciding the time you begin and discard the first morning urine, then note that start time. From that point, collect every urine void for the next 24 hours and end with a final void at the designated end time. It’s important to keep the container refrigerated during the collection period to prevent changes in urine composition from bacterial growth or degradation of analytes. This approach ensures completeness and accuracy: skipping the first morning urine would throw off the baseline, collecting only the first morning urine would not cover the full 24 hours, and taking a random set of samples would not represent daily excretion. Storing at room temperature risks altering the sample, which can affect the measurements.

In a 24-hour urine collection, the aim is to capture everything your body excretes over a full day so the result reflects daily excretion rather than a single void. Start by deciding the time you begin and discard the first morning urine, then note that start time. From that point, collect every urine void for the next 24 hours and end with a final void at the designated end time. It’s important to keep the container refrigerated during the collection period to prevent changes in urine composition from bacterial growth or degradation of analytes.

This approach ensures completeness and accuracy: skipping the first morning urine would throw off the baseline, collecting only the first morning urine would not cover the full 24 hours, and taking a random set of samples would not represent daily excretion. Storing at room temperature risks altering the sample, which can affect the measurements.

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