Roundworm infection can be generally detected by
Ascariasis is one of the most common roundworm infection caused by Ascaris lumbricoides. The roundworm infection can be detected by identifying the appearance of the worm or eggs in faeces by a stool test. Due to a large number of eggs laid, physicians can diagnose using only one or two faecal smears. The diagnosis is usually incidental when the host passes a worm in the stool or vomit. So, the correct answer is 'Stool test'.