The reason is that the body develops antibodies against any ABO antigens that are not naturally present in the blood. When a person receives a blood transfusion, it is essential to match the blood type of the donor to that of the recipient. However, it is important to note that not everyone secretes these antigens, and this method does not necessarily indicate the presence or absence of the Rh factor.Ĭan blood types affect blood transfusions?Ī blood transfusion typically occurs when a person has experienced trauma or surgery that has resulted in extreme blood loss. Around 80% of people produce the relevant antigens in their saliva.Īccording to 2018 research, if a person secretes these antigens in their saliva, a dried saliva sample can reliably indicate their blood type. Without drawing bloodĪ person may be able to use a saliva sample to test for their blood type. Typically, if clumping does not occur, the person’s blood type is O-negative. ![]() When one or more of the blood type antibodies or the Rh factor is present in the blood sample, the test produces a “clumping” of the blood. These test for the presence of antibodies and the Rh factor. The kit comes with a card that contains chemicals known as reagents. Using the kit requires a person to prick a finger with a needle. By drawing bloodĪ person can identify their blood type at home using a rapid blood typing kit. However, there are ways of determining blood type at home. There, a doctor or nurse draws a blood sample and sends it to a lab for testing. ![]() Share on Pinterest People who know their blood type might also have a better understanding of their health.Ī person usually visits a clinic or doctor’s office to find out their blood type.
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