Global health authorities are updating policies to conserve scarce Rh-negative blood while new scientific breakthroughs reveal ultra-rare blood types. Australia has expanded donor eligibility to ...

There are different blood types: A, B, AB, and O, with each also being Rh-positive or Rh-negative. Knowing your blood type is important for safe blood transfusions and organ transplants. Type ...

DEAR DR. ROACH: I am a 79-year-old female. I am in generally good health, but have a question about RhoGAM. When I had my children in the ’60s, I was in the original study conducted to see if my AB ...

There’s more history in your blood types than you think, and it didn’t begin with humans. Here’s what we know about them, ...

Add Yahoo as a preferred source to see more of our stories on Google. Doctor holding tube of specific blood type The average adult has between 1.2 and 1.5 gallons of blood in their body, accounting ...

The mysterious Rh factor-in human blood had disturbed the serenity of many a mother-to-be. For if a wife’s blood were Rh negative and a husband’s Rh positive, their child might be stillborn, or born ...

In March, the U.S. FDA reported a major shortage of Rhogam, the anti-D immune globulin most widely used to prevent Rh factor incompatibility in pregnancy. Without treatment, second and subsequent ...

A blood donation can mean the difference between life and death if you need a transfusion, and every year 4.5 million people do, according to the American Red Cross. One type of blood donation can be ...