Case Presentation: A 25-year-old Spanish-speaking man with a history of hypertension and post-streptococcal glomerulonephritis (PSGN) presented to the Emergency Department with abnormal kidney function tests. Two months earlier, his creatinine level was 2.68 mg/dL at an outside institution. He denied symptoms such as hematuria, dysuria, or edema. Physical examination revealed elevated blood pressure (172/92 mm [...]