A Nurse Is Obtaining Blood Specimens from a Patient's Central

A nurse is obtaining blood specimens from a patient's central line.What measure should the nurse use to ensure correct identification of the specimens collected?

A) Confirm patient name and room number and then write these on the specimen tubes and confirm with patient.
B) Identify the patient using two unique identifiers before starting the sample collection, and then immediately affix the label with patient identification, time collected, and nurse's initials.
C) Place printed label with identification on all tubes before obtaining the specimens, and ask the patient to observe that this is done.
D) Request the presence of a laboratory technician to label the specimens as these are collected, and note date and time collected on the label.