On a course of HAAA, hepatitis can be detected on some of the following parameters: subsequent increase in serum Alanine Trasnaminase (ALT), Aspartate Transaminase (AST), by at least three times above the normal values which are 6 to 41U/l, 9-34U/l, 5-58U/L for ALT and AST respectively [12, 18, 30, 35, 36, 43, 52, 53] , increase in serum Alkaline phosphatase (ALP), gamma glutaryl transferase (GGT) and billirubin (39-117U/l, 5-58 U/l, and 2-7 micromol/L, respectively). Peripheral blood count can be determined by Flow cytometry analysis with directly conjugated monoclonal antibodies for CD2, CD3, CD4, CD8, CD19 and HLA-DR, whereas haematopoietic failure with bone marrow hypocellularity can be elucidated in terms of absolute neutrophil count (less than 500 per mm 3 ), Platelet count (less than 20,000 per mm3), Reticulocyte count (less than 60,000 per mm 3 ) [53] and Protrombin Index (%): normal value 70-100% [24] . To establish the onset of pancytopenia following hepatitis, hypocelluarity of bone marrow below 50% might be obtained by bone marrow aspiration [14] and trephine biopsy [11] .