I know what you mean, but when I had a DT for a certain gov position, there were very strict instructions not to urinate in the toilet and not to flush the toilet after it was collected. Any piss in the water would cause it to change color. They wanted to be absolutely sure that all piss was captured from the beginning. Failure to comply was an auto DT failure. All I am saying, is that this procedure can and does happen in certain places. Thus, capturing "mid-stream" will not be an option in some situations. Hopefully, NAIR will be subjected to a test with less restrictions.
