👉 Bilirubinemia is a condition where there is an excessive amount of red blood cells containing bilirubin, which can cause the body to produce too much of this substance. This excess bilirubin may accumulate in various parts of the body, including the liver, kidneys, and brain. Bilirubin acts as a pigment in the blood that helps to transport oxygen from the lungs to the rest of the body. If too much bilirubin is produced or stored