How should the nurse identify a patient before obtaining a laboratory specimen?

A) Use at least two patient identifiers.
B) Look at the chart before entering the room.
C) Ask the patient his name.
D) Check the patient's armband twice.

Before obtaining a laboratory specimen,use at least two identifiers such as checking the identification number on the admission armband and asking the patient's name.Patients who are confused or who have a language barrier may smile and not understand the question.The patient could also have the wrong armband on;checking it twice would not change that.