A fecal test involves submitting a stool sample and having it checked for parasites, larvae, or eggs. This test is noninvasive and is usually the only test needed. Blood test. A blood test can be used to detect some types of parasites in the blood.
How do you know if there is a worm inside you?
You might have anal itching, especially at night. You could also have stomach pain, nausea, or vaginal itching. Sometimes pinworms can be seen around your anus or on your underwear or bed sheets about 2 to 3 hours after you've gone to bed.
What poop looks like when you have worms?
In stools, the worms look like small pieces of white cotton thread. Because of their size and white color, pinworms are difficult to see. The male worm is rarely seen because it remains inside the intestine.
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