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Peritoneal Equilibrium Test

The Peritoneal Equilibrium Test (PET) is a medical procedure used to determine the transport characteristics of the peritoneum in individuals undergoing peritoneal dialysis. Peritoneal dialysis is a type of treatment for kidney failure that uses the body's peritoneum, a membrane in the abdominal cavity, as a natural semipermeable membrane. Dialysis fluid is introduced into the abdominal cavity and wastes and excess water move from the blood across the peritoneum into the dialysis fluid, which is then drained.


  • Profile Name: Peritoneal Equilibrium Test
  • Sample Type: Blood
  • Preparations Required: Patient should be on dialysis. Avoid strenuous physical activity and heavy meals before the test.
  • Report Time: 6 hours

The PET evaluates how well and how quickly different substances, such as creatinine and glucose, are transported through the peritoneum. This allows physicians to classify the peritoneal membrane of dialysis patients into one of four categories: high, high-average, low-average, and low transporters, which helps in designing and adjusting the dialysis prescription to achieve optimal results.

Home Sample Collection Process
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Sample Collection by Phlebotomist
Sample Collection by Phlebotomist
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Reporting of the sample at lab
Reporting of the sample at lab
4
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Frequently Asked Questions

The PET test helps to determine the transport characteristics of the peritoneum in individuals undergoing peritoneal dialysis. This information is useful in individualizing dialysis prescriptions for optimal waste removal and fluid balance.

In a PET, the patient performs an exchange with a standard dialysis solution containing a known concentration of glucose. Samples of dialysis fluid are taken at intervals and tested to see how much glucose has been absorbed into the body and how much creatinine and other toxins have been removed into the dialysis fluid.

The duration of the test is usually about four hours. The procedure is typically performed in a clinical setting under the supervision of healthcare professionals.

The patient should be on dialysis and avoid strenuous physical activity and heavy meals before the test.

The risks associated with the PET are minimal and similar to those of routine peritoneal dialysis exchanges. Infection and discomfort at the site where the dialysis catheter enters the body are the main risks.

The results classify the peritoneal membrane of dialysis patients into one of four categories: high, high-average, low-average, or low transporters. These results help healthcare providers to individualize the patient’s dialysis prescription.

The frequency of the test depends on the individual patient's health status and the judgment of the healthcare provider. However, it is usually performed at the initiation of peritoneal dialysis therapy and then annually or biannually.

Yes, the transport characteristics of the peritoneum can change over time due to various factors, including infection, inflammation, and duration of dialysis. Therefore, regular monitoring through PET is essential.

If your test results are abnormal, it's important to discuss them with your healthcare provider who will interpret the results in the context of your overall health, symptoms, and medical history.

The test is typically performed in a clinical setting under the supervision of healthcare professionals. It involves careful sampling and measurement of dialysis fluid and therefore is not usually performed at home.

Certain medications can affect the transport of substances across the peritoneum and may potentially impact the PET results. It's essential to inform your healthcare provider about all the medications you are taking.

No, fasting is not typically required for the PET. However, heavy meals should be avoided before the test.

Glucose is used in the dialysis solution during the PET because it is a solute that is absorbed at a known rate through the peritoneum. By measuring the concentration of glucose in the dialysis fluid over time, the absorption rate of solutes can be determined.

The test is not usually painful. It involves the exchange of dialysis fluid through an existing catheter, similar to a regular dialysis session.

It's recommended to avoid strenuous physical activity and heavy meals before the test. It would be best if you also arrived at the test well-rested.

Understanding the results of your Peritoneal Equilibrium Test is a key component in managing your peritoneal dialysis treatment. By knowing how quickly your body can transfer waste products into the dialysis solution, your healthcare provider can tailor your treatment plan to ensure that you're getting the most effective dialysis treatment. Always consult your healthcare provider if you have questions or concerns about your test results.

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