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   e. a., b., and c.

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