Blood and serum analyses include testing for Cytomegalovirus (CMV), Epstein–Barr virus (EBV), hepatitis viruses A (HAV), B (HBV), C (HCV), and E (HEV), HIV-1/2, and syphilis (Treponema pallidum), as well as general blood chemistry tests (complete blood count, C-reactive protein [CRP], erythrocyte sedimentation rate [ESR], albumin, creatinine, electrolytes, aminotransferases [ALT, AST], bilirubin, gamma-glutamyl transferase [GGT], and alkaline phosphatase). The gene discussed is CRP; the disease is syphilis.