: Crossmatched blood will be held for a patient for 3 days. After that time it will be released without notification to the physician. It is the physician's responsibility to place further orders.
Expiration: Patient sample is used for crossmatch or antibody screen only if it is less than 3 days old. When it is known that the patient has not been recently transfused or pregnant, this time can be extended to 28 days, for pre-surgical patients.
: Does not assure normal red cell survival. Will not detect all antibodies or incompatibilities. Does not prevent all transfusion reactions.