Final answer:
The in-use test is used to determine whether disinfectant solutions are being used correctly in a clinical setting.
Step-by-step explanation:
The test used to determine whether disinfectant solutions actively used in a clinical setting are being used correctly is called the in-use test. This test is important to ensure that disinfectant solutions are being used appropriately to control microbial growth and protect patients, healthcare workers, and the community.