Delineation of hematological changes occurring in stored citrate phosphate dextrose adenine cpda-1 blood

Objectives: To study the changes in red cell indices and counts over a period of 42 days in blood stored in blood bags. Materials and Methods: This research was done in Blood Bank, Khyber Teaching Hospital, Peshawar in collaboration with the main laboratory, Khyber Teaching Hospital, Peshawar. About 450 ml of whole blood was taken from 200 donors into Citrate Phosphate Dextrose Adenine blood bags. The storage temperature for the blood bags was maintained between 2–8°C. Blood samples were collected from blood bags. At days 1 and 42, using a haematology analyser, parameters including haemoglobin, RBC count, WBC count, haematocrit, mean corpuscular volume, mean corpuscular haemoglobin, mean corpuscular haemoglobin concentration and platelet counts were measured. Mean and standard deviation were used for quantitative variables. Frequency and percentages were used for qualitative variables. Results: Through days 1 to 42, Haemoglobin (Hb) level decreased from 13.4gm/dl to 12.78 gm/dl, white cell count (WBC) decreased from 6.03x109/l to 2.95 x109/l, platelets count fell from 207 x109/l to 121 x109/l, neutrophils decreased from 59.6% to 23.8% while lymphocyte count increased from 28.36% to 66.3%. Conclusion: There is a decrease in haemoglobin level and white cell count over a period of 42 days of storage of blood bags. Lymphocyte counts increased during the storage duration of blood bags.