Drug-induced tubular toxicity (for example, with vancomycin) typically occurs after 7 to 10 days of antibiotic therapy and the urine sediment does not show cells, unlike in this patient. Antibiotic-induced AIN is typically associated with mild proteinuria, erythrocytes, leukocytes, and leukocyte casts on urinalysis. Eosinophiluria, recurrence of fevers, rash, and peripheral eosinophilia may also be seen