Which of the following is an example of a waived test?

A urine dipstick test is an example of a waived test because it meets specific criteria set by the Clinical Laboratory Improvement Amendments (CLIA) that categorize it as simple enough to be performed by non-laboratory personnel with minimal training. Waived tests are those that have been determined to have a low risk of incorrect results, and urine dipstick tests typically require only visual interpretation and straightforward procedures.

These tests can be performed outside of traditional laboratory settings, making them ideal for point-of-care environments. In contrast, a complete blood count and PCR tests involve more complex procedures, greater risk of erroneous results, and generally require more specialized training to perform accurately, which disqualifies them from being classified as waived tests. Cholesterol screenings can be turned into waived tests under certain conditions, but they are not universally classified as such, making them less definitive in comparison to the urine dipstick test. This is why choosing the urine dipstick test aligns with the definition and characteristics of waived testing in point-of-care scenarios.