A person's blood type is determined by "the presence or absence of certain antigens – substances that can trigger an immune response if they are foreign to the body," according to American Red Cross.

Blood – everyone's got it. In fact, an adult who weighs between 150 and 180 pounds has around 1.2 to 1.5 gallons of blood in their body. This makes up approximately 10% of an adult’s weight. Blood ...

Healthcare has grappled with a shortage of sodium citrate blood collection tubes — those with a light blue top — since June 2021. But according to an FDA update earlier this year, all blood collection ...