String Test
Alternate Names : Duodenal Parasites Test
Pictures & Images
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Ascaris Lumbricoides Egg
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This is a picture of an egg of Ascaris lumbricoides. Ascarides are roundworms, a common parasitic infection throughout the world. It is estimated that as many as 1 billion people (one sixth of the world population) may be infected with roundworms. This type of infection is more common in the warmer states of the United States.
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Gelatin Capsule in Stomach
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A string test is performed to detect the presence of intestinal parasites. A weighted gelatin capsule attached to a string is swallowed and left in place. After about 4 hours, the gelatin capsule is pulled out of the stomach by the string. Any bile, blood, or mucus remaining on the string is examined under the microscope for cell types and segments of parasites or eggs.
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