I couldn't find a regulation that says that per se, but according to the AABB Standards for BBTS (33rd) edition;
5.11.2.4 : The transfusion service shall have a policy to reduce the risk of misidentification of patient pretransfusion samples.
Also according to the recent AABB technical manual; page 504;
In our facility, the phlebotomist and a 2nd person verifies the patient's ID at the time of the pretransfusion specimen is drawn. They both sign their names on the request for blood bank testing form.
After the blood bank receives the specimen, me make sure the information matches between the form and the specimen. If the patient doesn't have ABO/Rh history, confirmatory ABO/Rh testing needs to be done before blood products can be issued.
Sources:
Cohn, Claudia S., Delaney, Meghan, Johnson, Susan T. and Katz, Louis M.. <em>Technical Manual, 20th edition</em>. https://ebooks.aabb.org/pdfreader/technical-manual-20th-edition50155278
PPID_pearls.pdf