The term used to describe the overall correctness of a testing procedure is known as:

The term that describes the overall correctness of a testing procedure is "accuracy." Accuracy refers to how close a test result comes to the true value or the actual state of whatever is being measured. In the context of point-of-care testing (POCT), achieving high accuracy means that the test results reflect an accurate assessment of the patient's condition, thereby leading to appropriate clinical decisions.

In contrast, validity refers to the extent to which a test measures what it is supposed to measure. While a test can be accurate, it may not necessarily be valid if it's not assessing the intended condition or outcome. Reliability, on the other hand, relates to the consistency of the test results over time or across different populations – a test can be reliable but still not accurate. Efficiency encompasses aspects like the speed and cost-effectiveness of a test rather than its correctness. Therefore, in the context of evaluating the correctness of a testing procedure, accuracy is the most appropriate term.