A test to detect the presence of pinworms.
Pinworms are small, thin parasites.
They commonly infest small children, although anyone can be infested. The adult pinworms live in the intestine, and at night the female adult worms deposit their eggs outside of the anus. During the night inspect the anal area using a flashlight. The worms are tiny, whitish, and threadlike. If none are seen, check for 2 or 3 additional nights.