Strongyloides are parasites that enter the body through exposed skin. Most cases are symptomless, but a more severe form may develop if left untreated. Symptoms include stomachache, intermittent diarrhea and constipation, nausea, and a red rash where the worm enters the skin. This test screens suspected cases of strongyloidiasis and detects asymptomatic chronic or latent infections in endemic areas and immuno-compromised patients (leukemia, lymphoma, myeloma) or before initiating steroid therapy.