A definitive diagnosis of ascariasis can be made by observing which of the following
Identification of adult worms passed by an individual can ensure a definitive diagnosis. Although an eosinophilia accompanies ascariasis, this condition can be caused by other infections and by various allergic conditions. Motile larvae in a stool are indicative of infection with Strongyloides stercoralis. Nematode larvae cannot be seen in an x-ray.