Causes of Acute Kidney Injury Based on Laboratory Findings
Blood Test | Finding | Possible Diagnosis |
|---|---|---|
Antiglomerular basement membrane (anti-GBM) antibodies | Positive | Anti-GBM disease (Goodpasture syndrome) |
Antineutrophil cytoplasmic antibodies | Positive | Small-vessel vasculitis (eg, granulomatosis with polyangiitis or microscopic polyangiitis) |
Antinuclear antibodies or antibodies to double-stranded DNA | Positive | |
Positive | ||
Creatine kinase or myoglobin level | Markedly elevated | |
Complement titers | Low | Cholesterol embolization Postinfectious glomerulonephritis SLE |
Protein electrophoresis (serum) | Monoclonal spike | |
Uric acid level | Elevated | Cancer or tumor lysis syndrome (leading to uric acid crystals) Prerenal acute kidney injury |
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