AIMS: Ordering of blood and its products is a common practce in medical feld. Demanding largequanttes of blood, of which litle is ultmately used commits exhauston of valuable supplies andresources both in technician tme and reagents as well as adds to fnancial burden on the patentsand costs valuable tme in preparing for emergency surgery. This can be decreased by simplemeans of changing the blood cross matching and ordering schedule depending upon the type osurgery performed. The aim of this study was to improve the efcacy of ordering of blood for itsmaximum utlizaton for commonly performed procedures. MATERIAL AND METHODS: We evaluated blood ordering and transfusion practces in emergencyand electve general surgical procedures at our insttute and calculated diferent indices such ascross-match to transfusion rato (C/T rato), transfusion probability (% T) and transfusion index(TI). Next Maximal Surgical Blood Ordering System (MSBOS) was estmated for each procedure.RESULTS: The blood utlizaton was only 13.6% at our insttute, consistng of 17.24% in the electveoperatons and 13.5% in the emergency operatons. Signifcant blood utlizaton was nil in most othe routne electve cases suggestng crossmatching of blood to be a culture than necessity.CONCLUSIONS: Blood ordering patern needs to be revised and over ordering of blood should beminimized. This can be possible by the estmaton of MSBOS for each procedure and requisitonas calculated. Key Words: Blood requisiton, Blood Transfusion, Transfusion Indices