What is this test?
This laboratory test is performed on a peritoneal fluid sample to analyze the levels of albumin and lactate dehydrogenase. This test helps in determining whether the peritoneal fluid is transudate or exudate.
Why is this test performed?
This test is performed to help in differentiating the peritoneal fluid into exudate or transudate. Once the peritoneal fluid is differentiated, further testing is required to find the exact cause of fluid accumulation in the peritoneal cavity.
- What are the risks of this test?
- Bleeding
- Infection
- Damage to vessels and bladder from needle
- Shock
- Low blood pressure.
- How to prepare for the test?
No special preparations are required for this test. Inform your doctor about your complete medical history especially of pregnancy, allergy, and bleeding problems.
- Is the procedure painful?
No, a numbing medicine is used to make it a painless procedure. However, pressure is felt from the needle.
- What is ascites?
Ascites is the abnormal build-up of fluid in the abdomen, usually due to a liver disease. It has the following symptoms:
- Abdominal distension
- Abdominal discomfort
- Shortness of breath
- Reduced appetite
- Weight gain.
- What is Paracentesis?
Paracentesis is a procedure to remove peritoneal fluid from the abdominal cavity with the help of a needle. It is used for peritoneal fluid analysis and removal of excess peritoneal fluid.
- Interpretation of test results:
Transudate:
Albumin: Lower than exudate
Serum-ascites albumin gradient: Above 1.1 g/dL
Lactate dehydrogenase serum to fluid ratio: Less than 0.6
Exudate:
Albumin: Higher than transudate
Serum-ascites albumin gradient: Below 1.1 g/dL
Lactate dehydrogenase serum to fluid ratio: greater than 0.6
You should get tested if you have:
- Ascites
- Abdominal pain
- Bloating
- Abdominal tenderness
- Intestinal perforation
- Suspected cancer of the abdominal lining.