Laboratory investigations of both cases
| Laboratory parameter/units | Case 1 | Case 2 |
| Age/gender | 37/female | 42/female |
| Haemoglobin | 14.8 | 10.5 |
| Total count | 7.840×109/L | 6.85×109/L |
| Platelets | 25.3×109/L | 39.5×109/L |
| CRP mg/L | 109 | 75 |
| ESR mm/hour | 60 | 45 |
| LDH U/L | Not done | 289 |
| Ferritin ng/mL | 755 | 169.4 |
| AST IU/L | 34.3 | 34.4 |
| ALT IU/L | 25.9 | 35.1 |
| Creatininie kinase U/L | 248 | 35 |
| Procalcitonin (ng/mL) | ||
| Baseline level at admission | 0.08 | 0.06 |
| On the day of worsening: | 0.45 | 0.07 |
| C3 mg/dL | 109 | 116.8 |
| C4 mg/dL | 13.6 | 26.1 |
| ANA screening (IFA) | Not done | +Speckeled pattern, 2+ |
| Direct coomb’s test | 1+ | 1+ |
| Anti CCP U | 352 | Not done |
| RF U | 64 | Negative |
| C ANCA | Not done | Negative |
| P ANCA | Not done | Negative |
ALT, alanine transaminase; ANA, anti-neutrophilc antibody; C ANCA, anti neutrophil cytoplasmic antibody; AST, aspartate aminotransferase; C3, complement 3; C4, complement 4; CCP, cyclic citrullinated peptide; CRP, c reactive protein; ESR, erythrocyte sedimentation rate; Hb, haemoglobin; LDH, lactate dehydrogenase; RF, Rheumatoid factor.;