How long until my blood is used?

Name of Office: National Voluntary Blood Services Program (NVBSP)

Most blood donations are processed and available for use within 48 hours. The reason for this is because each blood samples collected from donors will have to be tested for 4 markers of infectious diseases (HIV 1/2, Hepatitis B, Hepatitis C, Syphilis and Malaria) Blood grouping and Rh typing will also have to be determined to complete the testing.