When the urinalysis results are delivered, they are on a chart. The patients chart is not taken to the laboratory for results to be posted. Charts remain at either the bedside or nurses station, or travel with the patient. This could potentially affect patient care should the chart not be available.
When Turk passes the scalpel to Dr. Wen, he turns it around cupping the blade in his hand. The scalpel is a razor sharp instrument and no one with any amount of surgical experience would endanger themselves in such a manner.
When JD says " looks like a break in the ulna right there ", he clearly points at the radius.