A nurse is reinforcing teaching with a client who is scheduled for a percutaneous kidney biopsy. Which of the following client statements indicates a need for further teaching?

"I will need to lie on my back for several hours after the procedure."

"It's okay for me to take my anticoagulant the morning of the biopsy."

"I should avoid taking aspirin before the biopsy."

"I will report any flank pain or hematuria after the procedure."