Ab, antibody; Ag, antigen; ELISA, enzyme-linked immunosorbent assay; G6PD, glucose-6-phosphodehydrogenase; Hep, hepatitis; Hgb, hemoglobin; HIV, human immunodeficiency virus; HLA, human leukocyte antigen; IgG, immunoglobulin G; IgM, immunoglobulin M; PCR, polymerase chain reaction; Quant, quantitative test; UR, urine; CMV, Cytomegalovirus; RNA, ribonucleic acid; RPR, rapid plasma reagin; TB, tuberculosis. Here, G6PD is linked to hepatitis A virus infection.