No blood type is inherently "un-donatable," but compatibility rules mean certain types can only donate to a very narrow group (like AB+ to AB+), while rare types are difficult to match, and specific medical/lifestyle factors prevent many individuals from donating at all, regardless of their blood type. AB positive can only give to other AB positives, while O negative is the universal donor. Rare types like Rhnull ("golden blood") are almost impossible to match.
Group AB can donate to other AB's but can receive from all others. Group B can donate red blood cells to B's and AB's. Group A can donate red blood cells to A's and AB's. Group O can donate red blood cells to anybody.
O positive red blood cells are not universally compatible to all types, but they are compatible to any red blood cells that are positive (A+, B+, O+, AB+). Over 80% of the population has a positive blood type and can receive O positive blood. That's another reason it's in such high demand.
What's the rarest blood type? AB negative is the rarest of the 8 main blood types. Demand is for AB negative is relatively low and thanks to our current donors we usually have enough to meet patient need.
In Australia, you generally cannot donate blood if you're unwell (cold, flu), have certain infections (like HIV, Hepatitis), have had recent tattoos/piercings (wait times apply), have recently travelled to high-risk areas, use certain medications (like anti-clotting drugs), have had specific medical treatments (like melanoma treatment), or have had recent sex with new partners or male partners in certain situations. Age limits also apply (18-60 for new donors, up to 75 for first-timers).
Blood donation age limits vary by country, but generally, you must be at least 17 or 18 years old, with first-time donors often having a maximum age (like 75 in Australia, or 65 in the UK) while regular donors can continue past that age if they remain healthy. Key requirements include being in good health, meeting weight criteria (around 50kg/110lbs), and having no recent illnesses or certain risky behaviors, with specific rules for different donation types like plasma.
The rarest blood type in Australia, and globally, is Rh-null (Golden Blood), which lacks all Rh antigens and was first discovered in an Aboriginal Australian woman; among common types, AB-negative (AB-) is the rarest, found in about 1% of the population, though specific rare bloods linked to certain ancestries (like Polynesian or Indian) are also exceptionally scarce.
While the Bible doesn't mention Jesus's blood type, scientific analysis of relics linked to him, like the Shroud of Turin and Eucharistic miracle samples, consistently shows Type AB blood, a rare type, leading some to believe it's a miraculous sign, though skeptics point to potential bacterial contamination.
Studies have found that people with Type A or Type AB are at higher risk for gastric cancer. Additionally, if you have Type A, Type B or Type AB blood, you may have a higher risk for pancreatic cancer.
An AB personality's negative traits can include being self-centered, irresponsible, vulnerable, indecisive, forgetful, unforgiving, and critical. Famous people with AB blood types include Barack Obama, Marilyn Monroe, Jackie Chan, and John F. Kennedy.
Can your blood type change? Usually, you'll have the same blood type all of your life. In rare cases, however, blood types can change. The change usually relates to unique circumstances, such as having a bone marrow transplant or getting certain types of leukemia or infections.
Although there is no proven correlation between blood type and personality, many matchmaking services use it.
Over 80% of patients can receive O+ blood
Type O+ blood is given to patients more than any other blood type and that is why it's considered the most needed blood type.
The blood group which do not marry
Rh positive refers to someone whose blood contains the Rh factor, while Rh negative refers to someone whose blood does not contain this protein. Rh negative females and Rh positive males shouldn't get married. This could be fatal for both the mother and the child.
Blood donation requirements
To donate blood, Lifeblood donors must: Be healthy and not suffering from a cold, flu or other illness at the time of donation. Be aged between 18 and 75 years (other rules may apply if you are a current donor). Weigh at least 50kg.
Golden blood is the rarest kind of blood known in the world. It's also called Rh null blood, and about 43 people have ever been reported to have it. "The name 'golden blood' can sound like this is blood that's somehow more pure or safe for transfusions,” Dr. Otrock shares.
People with type A blood will react against type B or type AB blood. People with type B blood will react against type A or type AB blood. People with type O blood will react against type A, type B, or type AB blood. People with type AB blood will not react against type A, type B, type AB, or type O blood.
Resource Links. Bloomberg Several studies have now shown that people with blood type O are less susceptible to contracting Covid, and those with blood type A are more likely to get it.
In molecular history, type A appears to be the 'oldest' blood type, in the sense that the mutations that gave rise to types O and B appear to stem from it. Geneticists call this the wild-type or ancestral allele.
The blood is type AB which is the universal recipient. Both the flesh and blood showed signs of being alive. More recently, there have been several similar miracles around the world. Two of these miracles occurred in the Archdiocese of Buenos Aires when Pope Francis was the bishop of that diocese.
Yes, blood type is not as accurate as the DNA tests for ancestry, but still, your ABO blood type can tell a colorful story about your background. Hereditary blood type traits you receive from your parents are genetic, and population and geographical differences exist in the prevalence of blood types.
Aboriginal patients had a higher prevalence of ABO group O (59.8 % vs 43.9 %) and RhD positive (99.0 % vs 83.8 %). One-hundred-and-eleven patients had 154 RBC alloantibodies, 57/420 (13.6 %) Aboriginal versus 54/1907 (2.8 %) non-Aboriginal (p < 0.0001).
Blood type B is found in a much higher percentage (four times as often) in self-made millionaires than in the rest of the population.
Blood type can change, but only in very rare cases, usually due to serious medical conditions or treatments like bone marrow transplants. For most people, it stays the same for life. However, it is still important to know your blood type.