Though patients could presumably, too, be tested.
I knew it didn't look right. I even looked it up before I posted, and when I looked up the definition of "patients", it brought up "patient", which had the right definition... so I went with it.
I knew it didn't look right. I even looked it up before I posted, and when I looked up the definition of "patients", it brought up "patient", which had the right definition... so I went with it.