MPO and tuberculosis: AFP, alpha-fetoprotein; CA19-9, carbohydrate antigen 19-9; CEA, carcinoembryonic antigen; CSF, cerebrospinal fluid; HbA1c, glycated hemoglobin; HBs, hepatitis B surface; MPO-ANCA, myeloperoxidase-specific antineutrophil cytoplasmic antibody; PR3-ANCA, proteinase 3-specific antineutrophil cytoplasmic antibody; ProGRP, pro-gastrin-releasing peptide; PSA, prostate-specific antigen; sIL-2R, soluble interleukin-2 receptor; SS-A, Sjogren's Syndrome-A; SS-B, Sjogren's Syndrome-B; T-SPOT, T-cell spot test for tuberculosis