Which sampling method is commonly used to detect intestinal parasites by microscopic examination of feces?

Which sampling method is commonly used to detect intestinal parasites by microscopic examination of feces?

• A. Urinalysis
• B. Fecal smear
• C. Blood smear
• D. Skin swab

Answer: (B)

Microscopic examination of feces relies on preparing a sample so parasites can be seen on a slide. This fecal smear method spreads a small amount of stool onto a slide, often with a stain, so intestinal parasites such as eggs, cysts, or trophozoites become visible under the microscope. It provides a quick, direct look at what’s present in the stool and is a common first step in diagnosing parasitic infections. Other sample types—urine, blood, or skin swabs—are used to look for different tissues or infections and wouldn’t reveal intestinal parasites in feces. Keep in mind that a single smear can miss low parasite loads or intermittent shedding, so labs may combine smear results with concentration techniques or additional tests to improve detection.

Microscopic examination of feces relies on preparing a sample so parasites can be seen on a slide. This fecal smear method spreads a small amount of stool onto a slide, often with a stain, so intestinal parasites such as eggs, cysts, or trophozoites become visible under the microscope. It provides a quick, direct look at what’s present in the stool and is a common first step in diagnosing parasitic infections. Other sample types—urine, blood, or skin swabs—are used to look for different tissues or infections and wouldn’t reveal intestinal parasites in feces. Keep in mind that a single smear can miss low parasite loads or intermittent shedding, so labs may combine smear results with concentration techniques or additional tests to improve detection.