Blood type tests are easy and inexpensive to perform. ... For example, a person with type A blood could not receive a transfusion of type B blood. ... B+, B-, AB+, AB-, O+ and O-. How blood test ...

San Diego, CA - May 24: Clinical Lab Scientist Shermin Razmehr extracts samples of donor blood from test tubes and transfers them to DNA plates at the San Diego Blood Bank in San Diego, CA on ...