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Laboratory tests
| IgA221 mg/dL | RF <1 IU/mL |
| IgM 157 mg/dL | Anti SS-A/Ro antibody(-) |
| IgG 1136 mg/dL | Anti SS-B/La antibody (−) |
| IgG4 153 mg/dL ↑ | Anti DNA antibody (−) |
| CRP 0.11 mg/dL | Anti RNP antibody (−) |
| IL −6 83.5 pg/mL ↑ | MPO. ANCA <1.0 |
| PR3-ANCA <1.0 |
