What is the peritoneal equilibration test?

The peritoneal equilibration test (PET) measures how effectively peritoneal dialysis is working. During peritoneal dialysis, a cleansing solution is infused into the abdomen of a person whose kidneys don't work, where it pulls wastes and extra fluids from the blood.

The solution contains dextrose or another sugar, salt and minerals dissolved in water. A catheter (soft tube) fills the abdomen with the solution. The solution mixes with wastes, salt and liquid, and all are removed when the solution drains out. This filling and removal process is called an exchange.

PET measures how much dextrose has been absorbed into the body from a bag of solution, and how much of the waste products urea and creatinine have flowed into the solution in a four-hour period. The rate at which dextrose is absorbed by the body and waste products move into the dialysis solution varies in different people. Those with higher rates may need to leave the dialysis solution in their abdomen for a shorter period so that they don't absorb too much dextrose and dialysis solution.

Continue Learning about Dialysis


Healthy kidneys remove waste from your blood and produce hormones your body needs. If your kidneys fail, you either need a kidney transplant or dialysis. Dialysis is a procedure that uses a machine to perform many of the functions ...

of the kidney. Dialysis can help prevent problems resulting from kidney failure and it allows people with kidney failure to live productive lives. Dialysis filters your blood, and like a health kidney, removes waste from your blood. Patients using dialysis are also required to follow a strict diet in order to stay healthy. There are two types of dialysis: hemodialysis and peritoneal dialysis. There are different advantages and disadvantages with both hemodialysis and peritoneal dialysis. Talk to your doctor about which type of dialysis would work better for you.

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.