Once the blood is collected and stored, the testing laboratory of the HBB receives blood sample and conducts mandatory testing of all donor blood for blood group serology and infectious disease markers:

The tests which are performed by the serology laboratory of a HBB are as follow:

• ABO grouping and Rh(D) typing;
• Compatibility testing;
• Direct and indirect Coombs tests;
• Atypical antibody detection and identification.