Table 1.
Key initial laboratory results on presentation to the emergency department
| Lab | Valuea | Normal range |
|---|---|---|
| Hemoglobin | 96 g/L | 137–180 g/L |
| WBC | 5.7 × 109 | 4–11 × 109 |
| Platelets | 80 × 10 9 | 150–400 × 109 |
| Creatinine | 375 μmol/L | 50–120 μmol/L |
| LD | 999 U/L | 100–235 U/L |
| Haptoglobin | 1.53 g/L | 0.3–2 g/L |
| Fibrinogen | 3.0 g/L | 1.6–4.1 g/L |
| Total bilirubin | 36 μmol/L | 0–24 μmol/L |
| ALT | 107 U/L | 1–60 U/L |
| AST | 228 U/L | 8–40 U/L |
| Calcium | 1.89 mmol/L | 2.1–2.6 mmol/L |
| Phosphate | 1.55 mmol/L | 0.8–1.5 mmol/L |
| Magnesium | 0.62 mmol/L | 0.65–1.05 mmol/L |
| Urate | 420 μmol/L | 210–490 μmol/L |
| Albumin | 29 g/L | 33–48 g/L |
| INR | 1.9 | 0.9–1.1 |
| CRP | 331.4 mg/L | 0–8 mg/L |
| Ferritin | 15,273 μg/L | 30–500 μg/L |
| CK | 670 U/L | 0–195 U/L |
Additional negative tests: antinuclear antibody, extractable nuclear antigen, anti–double‐stranded DNA, antiphospholipid antibodies, antineutrophil cytoplasmic antibody, rheumatoid factor, complement C3, complement C4, serum protein electrophoresis, cryoglobulins, blood, urine cultures, repiratory viral panel, hepatitis B panel, hepatitis C, and cytomegalovirus IgG.
a
Abnormal values bolded.
Abbreviations: ALT, alanine aminotransferase; AST, aspartate aminotransferase; CK, creatine kinase; CRP, C‐reactive protein; INR, international normalized ratio; LD, lactate dehyndrogenase; WBC, white blood cell count.