<prompt> . The pH of the freshly collected blood in CPD solution bag is -71737476  <response>: Answer is option 3,ph7.4 donation of whole blood is most commonly collected in acidic citrate-phosphate-dextrose CPD variants with pH 5.2 to 6.2 as anticoagulants. Previously, we have shown that the initial pH after red blood cell RBC preparation can have an effect on RBCs during storage. First, we investigated the effect of the pH of the anticoagulant on RBCs. Second, we investigated the possibility of decreasing the pH of our new additive solution AS phosphate-adenine-glucose-guanosine-gluconate-mannitol PAGGGM from pH 8.2 to 7.4 in combination with an anticoagulant with a physiologic pH. Ref baley and love edition number 27.pg 15-17 