Activities of Coagulation Factors in Fresh Frozen Plasma After Long-Term Storage

Preserved SARS-CoV-2 neutralizing IgG activity of in-house manufactured COVID-19 convalescent plasma

“…To manufacture convalescent plasma products, we refer to the process of fresh frozen plasma (FFP), which is also a plasma product commonly used in hospitals. According to the guidelines for the blood transfusion system, the plasma should be separated as soon as possible after venipuncture and rapidly frozen (so-called fast-freezing) for greater yields of coagulation factor [5] , [6] .…”