New Method Found To Allow Two-Year Stockpiling of Blood

A new technique for freezing living whole blood has been developed by a clinical associate in medicine at the Medical School, Dr. James L. Tullis.

The new process has lengthened from 21 days to two years the period in which blood may be preserved. The technique involves a rapid and practical method of removing a glycerol preservative which freezes blood at 79 degrees below zero centigrade.

Blood frozen by the new method is being regularly used in transfusions at Boston hospitals. Tullis, who is also senior investigator on the research staff of the Protein Foundation, has said that blood stored 20 months has proven to be as effective as blood frozen only 21 days.

The old method of freezing blood used above-freezing temperatures and permitted storage for a maximum of only 21 days. The new process will permit the stockpiling of blood for defense.

Tullis made the announcement of his new discovery at a meeting of the Glycerine Producers Association, who honored him at their annual dinner.