ESR: Erythrocyte sedimentation rate; CRP: C-reactive protein; MCV: Mean corpuscular volume; MCH: Mean corpuscular hemoglobin; AST: Aspartate aminotransferase; ALT: Alanine aminotransferase; Anti-DNA: Anti-double stranded DNA antibodies; ENAs: Extractable nuclear antigens; C3-C4: Complement; VDRL: Venereal disease research laboratory test (non-treponemal manual test); HIV: Human immunodeficiency virus 1 and 2 (ELISA TEST). Here, CRP is linked to sexually transmitted disease.