Case Presentation: 49-year-old male patient with history of hypertension was sent by his nephrologist to the ER for unexplained worsening renal function and likely renal biopsy. Vital signs were stable, exam was unremarkable, however BUN was 85 mg/dL with creatinine of 10.1 mg/dL (baseline of 1.5 mg/dL). 24-hour urine protein excretion was 5.2 grams. The [...]