BACKGROUND: Early plasma transfusion is important in the treatment of patients with major hemorrhage. Prolonged shelf life of AB type frozen −80°C and cold-stored (4°C) deep frozen plasma (DFP) will improve strategic stock management, minimize need for resupply, and make pre-hospital implementation more feasible. METHODS AND MATERIALS: Plasma products type AB of different age and origin (−30°C Fresh Frozen [(FFP], −80°C DFP [short (±1 year) and long (±7 year)] stored) were thawed (Day 0), stored at 4°C, and sampled on Days 7 and 14. Additionally, samples of plasma containing blood products (Octaplas LG®, whole blood and platelets) were compared for coagulation factor activity, phospholipid clotting time (PPL), and kaolin TEG during 4°C or 22°C storage. RESULTS: Coagulation profiles of FFP, short- and long-stored −80°C DFP were not significantly different after thaw. Cold storage did not affect fibrinogen, Protein C, and Antithrombin III activities whereas factor V, VII, VIII, and Protein S decreased in all blood products. After 14 days DFP still meets the guidelines for clinical use, except for Protein S (0.4 IU/mL). With exception of Octaplas LG®, phospholipid activity and TEG coagulation were similar between plasma containing blood components during storage. CONCLUSION: AB DFP quality was unaffected by almost 7 years of frozen storage. Quality of thawed 14-day stored AB DFP met, with exception of Protein S, all minimal guidelines which implies that its quality is sufficient for use in the (pre)-hospital (military) environment for treatment of major hemorrhage.,
Erasmus MC: University Medical Center Rotterdam

Rijnhout, T.W.H. (Tim W.H.), Noorman, F. (Femke), Zoodsma, M. (Margreet), De Kort, B. (Bob), & Hoencamp, R. (2020). Prolonged (post-thaw) shelf life of −80°C frozen AB apheresis plasma. Transfusion. doi:10.1111/trf.15963