It's a two-way street. It's a complex clinical assessment. You have to take into account the injury. Is it a mechanism that could potentially lead to a concussion? Are there signs and symptoms that are consistent with a concussion.
It's really important to note there's no one test we can do to say that yes, you have a concussion. We can do CT scans and all sorts of magical things to make sure you don't have a more serious brain injury, but there's no one test that we can do.