AFP and sexually transmitted disease: CBC: complete blood count; ANC: absolute neutrophil count; BUN: blood urea nitrogen; CRP: C-reactive protein; ALT: alanine aminotransferase; AST: aspartate aminotransferase; CA-125: cancer antigen-125; AFP: alpha-fetoprotein; beta-hCG: beta-human chorionic gonadotropin; LDH: lactate dehydrogenase; WBCs: white blood cells; RBCs: red blood cells; STI: sexually transmitted infection; NAAT: nucleic acid amplification test; RPR: rapid plasma reagin; NK: natural killer