Chemical and Microbiological Changes of Expired Platelet Concentrate

Abstract

Nora Y Hakami,1 Abdulrahman M Al-Ahdal,1,2 Afnan J Al-Sulami,3 Httan M Alabbadi,3 Mamdouh M Sindi,4 Kholoud A Gholam,3 Maiman M Bayuomi,3 Talal Qadah1 1Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia; 2Hematology Department, King Salman Bin Abdulaziz Medical City, Medinah, Saudi Arabia; 3Blood Transfusion Services Unit, King Abdulaziz University Hospital, Jeddah, Saudi Arabia; 4Clinical Chemistry Laboratory, King Abdulaziz University Hospital, Jeddah, Saudi ArabiaCorrespondence: Nora Y Hakami, Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, 21589, Saudi Arabia, Email [email protected]: Platelets are a commonly used blood component to prevent or treat bleeding in patients with thrombocytopenia or platelet dysfunction. They are stored at room temperature (22– 24°C) for five days unless specific measures are taken to extend the shelf life to seven days or more. After five days, this study evaluated platelet units’ biochemical changes and bacterial growth.Study Design and Methods: Platelet concentrate was collected from 30 random donors: 8 females and 22 males. The collected samples were then placed on an agitator at room temperature and tested for their pH, protein content, and glucose levels using Roche Combur 100 Test® Strips. The Haemonetics eBDS™ System was used for bacterial detection. The measurements were taken on day five as the control and then repeated on days 7, 9, and 11 to observe any changes. On days 5 and 7, all parameters remained unchanged. However, glucose levels significantly changed (p=< 0.0001) on days 9 and 11. Regarding pH, a significant change was observed on day 9 (p=0.033) and day 11 (p=0.0002).Results: There were no significant changes in all parameters on days 5 and 7. However, glucose was substantially changed (p=< 0.0001) on days 9 and 11. For pH, there was a significant change in pH on day 9 (p=0.033) and day 11 (p=0.0002).Discussions: Our study found that platelet concentrate extension is possible for up to seven days. However, further studies are needed to evaluate platelet function during expiry time and to assess the stability of platelet morphology and function.Keywords: platelet, thrombocytopenia, storage extension, bacterial detection

Keywords

• platelet
• thrombocytopenia
• storage extension
• bacterial detection.