A pixel bit depth of 216 will demonstrate _______ shades of gray

Incruse Ellipta® is approved for

a. exacerbation of chronic obstructive pulmonary disease (COPD). b. thinning of dried secretions. c. acute bronchoconstriction. d. maintenance treatment of airflow obstruction in COPD.

All of the following may result in a false-negative nitrite test except:

A) first morning specimens. B) Gram-negative bacteria. C) low nitrate diet. D) random specimens.