After waiting more than two months to receive coronavirus tests this spring, the Ouray County Public Health Agency received 300 kits in May, only to find that dozens were defective and unusable.

Public Health Director Tanner Kingery said about 45 of the 300 tests he received had problems.

Each test is supposed to contain a vial with a liquid reagent “that keeps the sample viable as it’s being transported back and forth,” Kingery said. But some of the kits had no fluid, or the reagent was lea...