BLOOD BANKING PROCEDURES
T&S OR T&H:
The blood bank types the patient’s blood (ABO and Rh), screens for antibodies, and holds the blood. If a rare antibody is found, the physician usually is notified. If it is likely that blood will be needed, the T&S order may be changed to a T&C.
The blood bank does a T&S on the patient’s blood and matches specific donor units to the patient. The cross-match involves testing the recipient’s serum against donor blood cells. A T&C usually takes less than 1 h.
The bank sets up blood immediately and usually holds it for 12 h. For routine requests, the blood is set up at a date and time that you specify and usually held for 36 h.