The detection of eggs in faecal or duodenal drainage fluid is a straightforward method of diagnosing Schistosoma chinensis.
The faecal examination method, which involves collecting eggs in the faeces and testing them under a microscope, but this method has a low positive test rate and has the potential for missed and misdiagnosed cases, so testing needs to be done at least once a day for three consecutive days.
Duodenal drainage fluid testing, which has a higher positive rate, is more difficult to perform and is less commonly used clinically.