The nurse plans to collect a 24-hour urine specimen for a creatinine clearance test. Which instruction should the nurse provide to the CLIENT?

For the next 24 hours, notify the nurse when the bladder is full, and the nurse will collect catheterized specimens.

Urinate immediately into a urinal, and the lab will collect the specimen every 6 hours for the next 24 hours.

Urinate at a specified time, discard this urine, and collect all subsequent urine during the next 24 hours.

Cleanse and meatus, discard the first portion of voiding, and collect the rest in a sterile bottle.