Which of the following statements is true regarding insufficient urine quantity?

The true statement regarding insufficient urine quantity is that the donor may leave and return later. This option acknowledges that if a donor does not initially provide enough urine for testing, they can take a break to hydrate and then try again within a reasonable time frame. It's important to allow donors this opportunity, as hydration can aid in producing the required specimen volume.

In practice, collectors are typically instructed to manage such situations with flexibility to ensure that testing can proceed without unnecessary complications. Donors are often encouraged to drink water and give themselves a chance to provide a sufficient sample after a short period.

The other statements do not accurately represent the protocols for handling insufficient urine quantities. The collector doesn't need to collect another specimen immediately; instead, they allow the donor to try again after rehydration. Donors are also not generally given an option to request time to hydrate without the expectation of returning to the collection site, as this could lead to complications in monitoring and securing accurate results. Lastly, aborting the test without any collection is not a standard or preferred approach in such circumstances, as it defeats the purpose of allowing for a retest opportunity.