A client is having a peritoneal dialysis treatment. The nurse notes an opaque color to the effluent. What is the priority nursing assessment?

Obtain a sample of the effluent and send to the laboratory.

Flush the tubing with normal saline to maintain patency of the catheter.

Check the peritoneal catheter for kinking and curling.

Warm the dialysate solution in a microwave before instillation.