RR: Reference range; AST: Aspartate aminotransferase; ALT: Alanine aminotransferase; Alk Phos: Alkaline phosphatase; LDH: Lactate dehydrogenase; CRP: C-reactive protein; ESR: Sedimentation rate; sIL2-R: soluble interleukin-2 receptor; IgG: Immunoglobulin G; IgA: Immunoglobulin A; IgM: Immunoglobulin M; HIV: Human immunodeficiency virus; T-SPOT: T-cell Spot; Ab: Antibody; RPR: Rapid plasma reagin; TP: Treponema; Hep: Hepatitis. The gene discussed is GPT; the disease is hepatitis A virus infection.