It is my experience that most institutions treat these injuries in a 
"blanket" fashion along with needle sticks, etc.  This may or may not be 
overkill, but it seems that too much caution is not necessarily a bad thing.

By the way, where I am currently contracted, any OTJ injury also requires 
that the employee undergo drug testing.  (Their trust in us is WONDERFUL..)

Dave Reynolds, HT(ASCP)