Duodenal parasites test

You swallow a string with a weighted gelatin capsule on the end. Four hours later it is pulled back out. Any bile , blood, or mucus attached to the string is examined under the microscope for cells and parasites or parasite eggs.

You may be asked not to eat or drink anything for 12 hours before the test.

You may find it difficult to swallow the string, and you may feel an urge to vomit when the string is being removed.

The test is performed when your health care provider suspects that you have a parasite infection, but no parasites were found in a stool sample.

No blood, parasites, fungi, or abnormal cells is normal.

Normal value ranges may vary slightly among different laboratories. Talk to your health care provider about the meaning of your specific test results.

Abnormal results may be a sign of giardia or another parasite infection.

Treatment with certain drugs can affect the test results.

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