Table 1.
Selected laboratory tests in current case
| Test | Value | Normal Range |
|---|---|---|
| Tests for autoimmune diseases | ||
|
| ||
| Antinuclear antibody | Negative | Negative |
| Rheumatoid factor (IU/mL) | <20 | <20 |
| Complement component 3 (C3) (g/L) | 0.92 | 0.80–1.70 |
| Complement component 4 (C4) (g/L) | 0.15 | 0.16–0.40 |
| C-reactive protein (mg/L) | 153 | <10 |
| Erythrocyte sedimentation rate (mm/hr) | 98 | 0–15 |
| IgG (g/L) | 17.20 | 7.00–16.00 |
| IgA (g/L) | 9.21 | 0.70–4.00 |
| IgM (g/L) | 23.60 | 0.46–3.04 |
| Serum immunofixation | No monoclonal bands | No monoclonal bands |
|
| ||
| Tests for infectious diseases | ||
|
| ||
| Blood cultures (bacterial, fungal) | Negative | Negative |
| Human immunodeficiency virus (HIV) | Non-reactive | Non-reactive |
| Rapid plasma reagin (RPR) | Non-reactive | Non-reactive |
| Anti-Steptolysin O titer (IU/ml) | <25 | <125 |
| Hepatitis B surface antigen | Negative | Negative |
| Hepatitis C antibody | Negative | Negative |
| Parvovrius B19 (PCR) | Negative | Negative |
| Babesiosis (PCR) | Negative | Negative |
| Ehrlichiosis (PCR) | Negative | Negative |
| Lyme Disease (Antibody, PCR) | Negative | Negative |
|
| ||
| Tests for genetic diseases | ||
|
| ||
| Familial Mediterranean Fever (FMF) | No MEFV gene mutations | No mutations |
| TNF Recepter-1 Associated Periodic Syndromes (TRAPS) | No TNFR1 gene mutations | No mutations |
| Cryopyrin-Associated Periodic Syndromes (CAPS) | No CIAS 1 gene mutations | No mutations |