10 Mind-Blowing Blood Type Secrets Your DNA Doesn't Want You to Know

2. Type A

Type A blood only has A antigens, and B antibodies are present in the plasma. An estimated thirty-four percent of Americans have A positive blood, making it the second most common blood type in the country. Patients with this blood type can donate blood to individuals who have either A positive or AB positive blood. They can receive blood transfusions of A positive, A negative, O positive, or O negative blood. Six percent of the United States population has A negative blood, making it one of the rarer types. Individuals with A negative blood can receive blood that is either O negative or A negative. A negative blood can be donated to patients who have A positive, A negative, AB positive, or AB negative blood.