CRP and anemia: Laboratory analysis showed normal levels of rheumatoid factor, antinuclear antibodies, antibody against cyclocitrullin, antineutrophil cytoplasmic antibody, anticardiolipin antibody, anti-beta2 glycoprotein a, i-kinetochore antibody, alexin, uric acid, and antistreptolysin O. Her complete blood count suggested anemia (hemoglobin 68 g/L, red blood cells 2.49 × 109), low IgG (5.96 g/L) and IgM (0.39 g/L), and high levels of C-reactive protein (CRP, 60.2 mg/L), a high erythrocyte sedimentation rate (ESR, 36 mm/h), and high interleukin-(IL) 6 (198.69 pg/mL).