Which Identifiers for Patient Identification Before Sample Collection Are Routinely

Which identifiers for patient identification before sample collection are routinely used?

A) Comparing information obtained verbally and from the patient's identification band with the information on the test requisition
B) Asking the patient to state his or her first name and last name
C) Asking the patient "Are you John Doe?" or "Are you Mary Doe?"
D) Both A and B