Mr. ling, age 58, saw his physician for a routine checkup. as part of the physical examination, a stool guaiac test was done to:

, a stool guaiac test was done to DETERMINE THE PRESENCE OF HIDDEN BLOOD IN THE FECES.
The stool guaiac test is one of the tests used in the medical laboratory to detect the presence of occult fecal blood. The test is very sensitive and can detect even minute traces of blood in feces. The test is typically done to detect the presence of blood in the digestive tract. A negative result obtained for the test implied that there is no stool in the blood.

Salutations!

are the fundamental building blocks of heredity.

Genes  are the fundamental building blocks of heredity. Genes are compromised of DNA. Genes instructs to conceive molecules called proteins.

Hope I helped (:
Have a great day!