1) Recent studies have shown that some blood stored until the end of the storage period is not suitable for transfusion due to deterioration of blood cells, leading to side effects and even death. 2) The company Trustfusion has developed a non-invasive method and device for testing blood quality during storage that provides results in 1-2 minutes, much faster than competitors' tests. 3) Their device consists of two modules - one to establish blood cell flow and another to measure light transmission to determine blood quality. This allows for automated testing of blood inside storage bags.