Components of the Glutathione Cycle as Markers of Biological Age: An Approach to Clinical Application in Aging Reticulocyte count is a vital blood test that measures immature red blood cells to evaluate bone marrow function. Low or high levels can indicate anemia, blood loss, or bone marrow disorders. Early Routine Blood Work: Test Types, Importance, Results Changes in red blood cell (RBC) levels of glutathione (GSH) over time. Download Scientific Diagram A locally activatable sensor for robust quantification of organellar glutathione Nature Chemistry Your Glutathione Index Defines How Your Cells Are Ageing