The correct technique for obtaining a stool specimen for ova and parasites is to use a wooden stick and:

A. Has a Foley catheter in place: Not required for an MRI. Foley catheters made of metal-free materials do not interfere with MRI imaging.

B. Has drunk a liter of fluid: This is not relevant for an MRI, unless specifically indicated for contrast imaging, which is uncommon.

C. Has eaten a meal: Eating or fasting is not typically relevant for MRI procedures unless sedation or contrast media requires it.

D. Is not wearing anything with metal: Metal objects can interfere with the MRI’s magnetic field and pose a safety risk to the patient and equipment. Even small objects like jewelry, piercings, or implanted devices must be addressed to prevent harm.

A. Obtain the specimen from two parts of the stool. Collecting from two different areas increases the chance of identifying parasites or their ova, as they may not be uniformly distributed in the stool.

B. Obtain the specimen from the middle of the stool: This limits the potential for detecting parasites in other areas of the stool.

C. Place the whole stool specimen in the specimen container: Typically unnecessary and may overfill the container, causing contamination.

D. Include any liquid stool: While liquid stool may be relevant, the sample should still come from multiple areas.