Lab quiz Occult fecal

Colorectal cancer is one of the most common forms of cancer in individuals older than 50 years.

T

During the early asymptomatic stages, almost all neoplasms of the colon and rectum bleed a small amount on an intermittent basis.

T

Hidden blood in the stool is known as melena.

F

The stool sample should not be collected if there is visible blood in the stool or urine.

T

The patient should be instructed to consume foods that are low in fiber starting 3 days before the collection period.

F

Improper patient preparation for the FOBT can lead to inaccurate test results.

T

The slides contain filter paper impregnated with guaiac, a chemical necessary for detection of blood in the stool.

T

The patient should be instructed to store the slides in the refrigerator.

F

If the Hemoccult slides are exposed to heat, the active reagents impregnated on the filter paper can deteriorate, leading to inaccurate test results.

T

The patient should be instructed to collect a stool specimen from two different parts of the stool

T

A thick smear of the stool specimen should be spread over the filter paper.

F

The wooden applicators should be flushed down the toilet.

F

A standard envelope can be used to mail the Hemoccult slides to the medical office.

F

An outdated solution should not be used to develop the slides because it can lead to inaccurate test results.

T

Two drops of developing solution should be applied to the guaiac test paper underlying the back of each smear.

T

The developing solution can cause irritation of the skin and eyes if contact occurs.

T

Failure of the expected control results to occur indicates an error, and the test results are not valid.

T

The Hemoccult slides should be discarded in a biohazard waste container.

F