The most expensive blood type in the world is Rhnull, also known as "golden blood." This incredibly rare blood type lacks all of the Rh antigens found on red blood cells. There are only 43 known individuals worldwide with this blood type.
Rhnull blood is considered "universal" for individuals with rare blood types within the Rh system, making it incredibly valuable for transfusions. Due to its scarcity and life-saving potential, Rhnull blood is highly sought after, leading to its nickname "golden blood."
