Hematology/Blood Group Science Hematology/ Blood Group ScienceOur study into the morphology of blood and blood-forming tissues enable us to investigate the composition, functions, diseases, and disorders of the blood Packed Cell volume haemoglobin (hB) full blood count (fBC) erythrocyte sedimentation rate (ESR) Retics count platelet count HB Genotype Osmotic fragility test Partial thromboplastin time with koalin (pTTK) Prothrombin tim (PT) clotting time bone marrow film comment blood group (ABO & Rh) one unit of rhesus positive blood (screened) one unit of rhesus negative blood (screened) retroviral screening hepatitis (HBsAG) hepatitis (HCV) grouping & cross matching antibody screening direct coomb’s Test indirect coomb’s Test CD4 count viral load