Blood collected in a red-top tube and a lavender tube was sent through a tube system to the STAT laboratory. The blood specimens were not labeled with any type of patient identification. The medical technologist called the emergency room (ER) to notify them of the problem. The ER nurse stated she wanted the tubes sent back to the ER and that she would label them. The stat laboratory technologist related the laboratory's policy on unlabeled specimens, saying that they would be discarded. At that point the disgruntled nurse said she would write up a(n) for the laboratory's refusal to analyze blood on an emergency patient.