About Blood Type O Positive

Blood type O positive is the most common blood type. Save Syringe needle image by Aleksandr Ugorenkov from Fotolia.com

Blood type O is positive has two main characteristics: the absence of blood or B antigens and a positive Rhesus (Rh). According to the American Red Cross, O positive is the most common blood and share 38 percent of the US population ..


There are eight types of common inherited blood on an individual basis or blood type of their parents or combination thereof. • A positive • A negative • Positive Negative • B • B • AB AB positive positive negative • O • O Negative

Because incompatible blood antigens, the inmonológico receiver system may reject some of them. Only certain combinations of blood types are compatible.

Tips for blood transfusions

Should a person with O positive blood transfusion needs due to trauma, surgery, cancer, blood disorders or other diseases, he or she can only receive negative or O positive blood O. As a result, O positive blood is in high demand, behind O negative blood, which is used in emergency situations when there is no time to get the blood type of the recipient. Those who are O positive blood can donate to any of the other positive blood types. According to the Red Cross, this means: • 84 percent of the population can receive their red blood cells • 100 percent of the population can receive your platelets • 45 percent of the population can receive their plasma

Double red cell donation

Due to high demand, people with O positive blood are encouraged to donate double red cells. This is an automated process in which a machine extracts the number of red blood cells found in a unit of whole blood and other blood components returns (platelets and plasma) twice donor. According to the Red Cross, the cells collected from this blood type is more likely to benefit patients and trauma surgeries. These people can donate double red cells every 112 days or three times a year.

Rh factor incompatibility and pregnancy

As mentioned above, the positive or negative quality of a blood type refers to Rh factor. Besides being an important figure for blood transfusions, Rh incompatibility is a potential concern during pregnancy. According to an article published in Kidshealth.org, about 85 percent of people are Rh positive. If a woman is Rh negative and Rh positive man (including O positive) when conceiving a baby, there is a probability of 50 percent of the infant possesses Rh-positive blood, which can cause the mother's body produces antibodies attack the foreign substance. Although the resulting Rh disease poses significant risks for the mother and newborn, doctors prevent problems by administering two doses of Rh immunoglobulin during the first pregnancy of a woman at risk, says the article.

O Positive Personality

The Japanese believe that blood type influences personality of individuals. According to an article published in the journal Science World, people with blood type O (regardless of Rh factor) are considered outgoing and self-confident. The article adds that many famous Japanese baseball players have this blood type.