Question

A urinalysis is a test that examines physical, chemical and microscopic aspects of urine. Examining urinary fluid can reveal much about the functioning of the body, as changes from the normal characteristics or appearance may reflect specific diseases. Currently, commercially-available chemical reagent sticks can be used to detect substances in urine. Of the following, which are substances that reagent sticks can test for?

	a.	Substances produced by the body, and naturally found in urine.
	b.	Substances produced by the body, but not usually present in urine.
	c.	Substances not normally found in the body.
	d.	a. and c. only

Answer 1

Ans. (D) a and c only.

Explaination: During urine analysis, a chemical reagent stick should be able to detect the normal substances produced by the body and present in urine. The lower level or higher level of these substances in urine like Sodium, potassium, proteins etc. i.e. deviations from normal range will indicate underlying diseases or disorders in the body. Substances that are normally not present in the body should be able to be detected by reagent sticks. For example, in type I and type II diabetes patients, glucose is present in urine which is not found in a normal blood person.In UTI patients blood may be present in the urine which is absent in normal urine. Many protozoa and bacteria which are not usually present in body becomes present in urine during infection.Hence, reagent sticks should be able to detect substances usually not found in body and urine.