10How to Test for Blood Type
The best way to know your blood type is to do a blood test. This can be done by getting a blood sample, typically from the arm. During an analysis, the technician will combine this blood sample with 3 different substances that contain Rh factor, B antibodies, or A antibodies. Each substance will lead to different reactions. By observing how the sample reacts, it is possible to determine you blood type. A blood test can be done for many purposes, such as blood donation and diagnosis of medical conditions. [10]












