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10 AB Negative Blood Type Facts

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AB Negative Blood Type Facts (AB+)

1. The Rarest Blood Type and Universal Plasma Donor

The nature of antigens present in the serum determines the blood type. AB negative suggests that an individual has both the antigens A and B. Individuals who are AB blood group are commonly called universal plasma donors because their plasma can be transfused to any person of whatever blood group. The blood type is also the rarest blood types among all the blood group because it is present in only 1 out of 167 individuals. This means an approximately 0.6% of the population has an AB negative blood. Not all of the ethnic groups share the same proportions of the AB negative blood type though. This blood type is present in about 1% in Caucasians, 0.3% in African American, 0.2% in Hispanic, and 0.1% in Asian.

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2. Inheritance Patterns

The ABO gene found on chromosome 9 determines the ABO blood group system. A and B genes are codominant in relationship, making the expression of both antigens A and B when either alleles A or B is present. Blood Group AB has both A and B antigen on red cells but with neither A or B antibody in the plasma.

How is AB Negative blood type inherited?

If parental blood groups consist of A and B, the child’s blood group will either be one of O, A, B, or AB.

If parental blood groups consist of A and AB, the child’s blood group will either be one of A, B, or AB.

If parental blood groups consist of B and AB, the child’s blood group will either be one of B, A, or AB.

If parental blood groups consist of AB and AB, the child’s blood group will either be one of A, B, or AB.

3. Blood Type Compatibility: AB- Can Receive AB-, B-, A- and O-

A recipient with an AB negative blood type has both the antigens A and B on the blood but without the Rh antigen. Having the presence of A and B antigens and the absence of the Rh antigen, AB negative blood type can only receive blood types from AB-, B-, A- and O-.

4. Blood Type Compatibility: AB- Can Only Be Given To AB- and AB+

An AB- donor can only give blood to individuals with AB+ and AB- blood type. This is because of the presence of both antigens A and B and the absence of Rh antigen in the donor’s blood. Any transfusion of AB- to any other blood groups can cause immune attacks.

5. Plasma Type Compatibility: AB Can Only Receive AB

Blood Type AB doesn’t carry both the A and B antibody, making blood type AB group to be only compatible in receiving plasma from blood group AB. However, as a potential universal plasma donor, blood type AB plasma can be given to all blood groups.

6. Has No Rh Factor

Rh Factor is an additional marker in the blood. This can be classified as either Rh positive or Rh negative. This marker is only used for genetic differences. An AB- blood type is Rh negative. The lack of Rh antigen occurs in about 15% of people. The exposure of Rh negative individuals to Rh cells, even in small amounts can result to anti-D alloantibody production. It usually happens by either pregnancy or transfusion. This can cause hemolytic disease of the fetus and newborn as well as hemolytic transfusion reactions.

7. Primary Benefits and Challenges

Blood Type AB individuals share the benefits and challenges that both Blood Type A and Blood Type B individuals may face. However, AB type individuals may principally carry either A type characteristics or B type characteristics. But it can still be a mixture of both A and B.

8. Blood Type AB Personality

Individuals with blood type AB has been associated to being spiritual and intuitive. Also, they are significantly friendly, empathetic, trusting, emotional and passionate.

9. Diet Recommendations

Low stomach acidity has been linked to Blood Type AB individuals. This causes the lack of ability to metabolize food efficiently and often, intake of meat are being stored as fat. Smaller, frequent meals is recommended. Especially in stressful situation, individuals of this blood type should avoid alcohol and caffeine. Food suggestions include green leafy vegetables, seafood, dairy (like kefir and yogurt), tofu, sardines, tuna and salmon.

10. Exercise Recommendations

Exercise can be very beneficial for Blood Type AB individuals especially in the maintenance of healthy emotional balance and stress reduction. It recommended to perform a mixture of both aerobic physical exercise like biking or jogging and calming activities like yoga or meditation.

Having your blood type taken may cost up to $200 in an office. Some individuals seek instead the use of blood typing kits like this one, which is worth less than $20.

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