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Exams and Tests
When pinworm infection is suspected, the doctor will find out your or your child's medical history and do a physical exam. During the physical exam, your doctor will examine the skin around the anus for redness and irritation. Also your doctor may ask you to collect a sample by using a piece of transparent adhesive tape. This test, sometimes called a cellophane or "Scotch tape" test, involves pressing a piece of transparent adhesive tape on the skin around the anus in the morning before you or your child gets up or bathes. This piece of tape is then viewed under a microscope to look for pinworms and their eggs. Using this test for 3 days in a row will successfully diagnose pinworms 90% of the time.2
Other tests may be done if the physical exam and cellophane test have not shown pinworms and an infection is still suspected.
If a complication of pinworm infection is suspected, more tests may be done. The specific tests that are needed will depend on the person's symptoms and the part of the body that is affected.
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